United States Senate elections, 2016

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United States Senate elections, 2016
United States Senate
2014 ←
November 8, 2016 → 2018

Class 3 (34 of the 100) seats in the United States Senate
51 seats needed for a majority
  Sen Mitch McConnell official.jpg Harry Reid official portrait 2009.jpg
Leader Mitch McConnell Harry Reid (retiring)
Party Republican Democratic
Leader's seat Kentucky Nevada
Last election 54 44
Current seats 54 44
Seats needed Steady Increase 5[Note 1]
Seats up 24 10

Party Independent
Current seats 2
Seats up 0

2016 Senate election map.svg

     Democratic incumbent      Retiring Democrat
     Republican incumbent      Retiring Republican
     No election
  1. ^ Assuming that the two Independents continue to caucus with the Democrats.

Elections for the United States Senate will be held on November 8, 2016, with 34 of the 100 seats in the Senate being contested in regular elections whose winners will serve six-year terms from January 3, 2017 until January 3, 2023. All class 3 Senators are up for election; class 3 was last up for election in 2010, when Republicans won a net gain of six seats. Currently, Democrats are expected to have 10 seats up for election, and Republicans are expected to have 24 seats up for election. Special elections may also be held to fill vacancies that occur during the 114th United States Congress. Republicans, having taken control of the Senate in the 2014 election, currently hold the Senate majority with 54 seats.

The 2016 Presidential election, 2016 House elections, 2016 gubernatorial elections, and many state and local elections will also be held on this date.

Partisan composition[edit]

All 34 Class 3 Senators are up for election in 2016; Class 3 currently consists of 10 Democrats and 24 Republicans. Of the Senators not up for election, 34 Senators are Democrats, 30 Senators are Republicans and two Senators are independents who caucus with the Senate Democrats. If vacancies occur in Class 1 or Class 2 Senate seats, the state might require a special election to take place during the 114th Congress, possibly concurrently with the other 2016 Senate elections.

Parties Total
Democratic Republican Independent
Last election (2014) 44 54 2 100
Before this election 44 54 2 100
Not up 34 30 2 66
Class 1 (20122018) 23 8 2 33
Class 2 (20142020) 11 22 0 33
Up 10 24 0 34
Class 3 (2010→2016) 10 24 0 34
Special: Class 1 & 2[1] 0 0 0 0
Incumbent retiring 3 3 6
Incumbent running 7 21 28

Change in composition[edit]

Senate composition before the elections[edit]

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D34 D33 D32 D31
I1 I2 R54
Majority →
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

Senate composition after the elections[edit]

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
TBD TBD TBD TBD I1 I2 D34 D33 D32 D31
Majority → TBD
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10
D# Democratic
R# Republican
I# Independent, caucusing with Democrats[2][3]

Latest predictions of competitive seats[edit]

Several sites and individuals publish predictions of competitive seats. These predictions look at factors such as the strength of the incumbent (if the incumbent is running for re-election), the strength of the candidates, and the partisan leanings of the state (reflected in part by the state's Cook Partisan Voting Index rating). The predictions assign ratings to each seat, with the rating indicating the predicted advantage that a party has in winning that seat. Most election predictors use "tossup" to indicate that neither party has an advantage, "lean" to indicate that one party has a slight advantage, "likely" or "favored" to indicate that one party has a significant but not insurmountable advantage, and "safe" or "solid" to indicate that one party has a near-certain chance of victory. Some predictions also include a "tilt" rating that indicates that one party has an advantage that is not quite as strong as the "lean" rating would indicate.

All seats classified with at least one rating of anything other than "safe" or "solid" are listed below.

State PVI Incumbent
(Parentheses if
November 23
Dec 10
July 24
Jan 28
Alaska R+12 Lisa Murkowski (R) 2004[8] 39.5%[9] Likely R Safe R Safe R Safe R
Arizona R+7 John McCain (R) 1986 59.2% Likely R Lean R Likely R Lean R
California D+9 (Barbara Boxer) (D) 1992 52.2% Likely D Safe D Safe D Safe D
Colorado D+1 Michael Bennet (D) 2010[10] 47.7% Lean D Lean D Lean D Lean D
Florida R+2 (Marco Rubio) (R) 2010 48.9% Tossup Tossup Tossup Tossup
Georgia R+6 Johnny Isakson (R) 2004 58.1% Likely R Safe R Safe R Safe R
Illinois D+8 Mark Kirk (R) 2010 48.2% Tossup Lean D Tilt D Tossup
Indiana R+5 (Dan Coats) (R) 2010[11] 56.4% Likely R Likely R Likely R Likely R
Louisiana R+12 (David Vitter) (R) 2004 56.6% Safe R Likely R Safe R Safe R
Missouri R+5 Roy Blunt (R) 2010 54.3% Likely R Likely R Likely R Likely R
Nevada D+2 (Harry Reid) (D) 1986 50.2% Tossup Tossup Tossup Tossup
New Hampshire D+1 Kelly Ayotte (R) 2010 60.2% Tossup Tossup Tilt R Tossup
North Carolina R+3 Richard Burr (R) 2004 55.0% Lean R Likely R Lean R Likely R
Ohio R+1 Rob Portman (R) 2010 57.3% Lean R Lean R Lean R Lean R
Pennsylvania D+1 Pat Toomey (R) 2010 51.0% Lean R Lean R Tilt R Lean R
Wisconsin D+2 Ron Johnson (R) 2010 51.9% Tossup Lean D Tossup Lean D
  Competitive Democratic-held seat
  Competitive Republican-held seat
  Democratic-favored seat
  Republican-favored seat

Race summary[edit]

(linked to
summaries below)
Incumbent Detail Candidates
Senator Party Electoral
Alabama Richard Shelby Republican 1986
Incumbent running for re-election. Richard Shelby (Republican)[12]
Marcus Bowman (Republican)[13]
John Martin (Republican)[13]
Jonathan McConnell (Republican)[14]
Shadrack McGill (Republican)[15]
Charles Nana (Democratic)[13]
Ron Crumpton (Democratic)[16]
Alaska Lisa Murkowski Republican 2002 (Appointed)
Incumbent running for re-election. Lisa Murkowski (Republican)[17]
Thomas Lamb (Republican)[18]
Cean Stevens (Libertarian)[19]
Arizona John McCain Republican 1986
Incumbent running for re-election. Lennie Clark (Democratic)[20]
Ann Kirkpatrick (Democratic)[21]
John McCain (Republican)[22]
Alex Meluskey (Republican)[23]
David Pizer (Republican)[24]
Clair Van Steenwyk (Republican)[25]
Kelli Ward (Republican)[26]
Arkansas John Boozman Republican 2010 Incumbent running for re-election. John Boozman (Republican)[27]
Curtis Coleman (Republican)[28]
Conner Eldridge (Democratic)[29]
Frank Gilbert (Libertarian)[30]
California Barbara Boxer Democratic 1992
Incumbent retiring. Kamala Harris (Democratic)[31]
Loretta Sanchez (Democratic) [32]
Tom Del Beccaro (Republican)[33]
Duf Sundheim (Republican)[34]
Colorado Michael Bennet Democratic 2009 (Appointed)
Incumbent running for re-election. Michael Bennet (Democratic)[35]
Robert Blaha (Republican)[36]
Ryan Frazier (Republican)[37]
Darryl Glenn (Republican)[38]
Jack Graham (Republican)[39]
Jon Keyser (Republican)[40]
Peggy Littleton (Republican)[41]
Greg Lopez (Republican)[42]
Tim Neville (Republican)[43]
Donald Rosier (Republican)[44]
Connecticut Richard Blumenthal Democratic 2010 Incumbent running for re-election. Richard Blumenthal (Democratic)[45]
August Wolf (Republican)[46]
Florida Marco Rubio Republican 2010 Incumbent retiring. Ron DeSantis (Republican)[47]
David Jolly (Republican)[48]
Carlos Lopez-Cantera (Republican)[49]
Todd Wilcox (Republican)[50]
Patrick Murphy (Democratic)[51]
Alan Grayson (Democratic)[52]
Pam Keith (Democratic)[53]
Georgia Johnny Isakson Republican 2004
Incumbent running for re-election. Lee Benedict (Republican)[54]
Derrick Grayson (Republican)[55]
Johnny Isakson (Republican)[56]
Hawaii Brian Schatz Democratic 2012 (Appointed)
2014 (Special)
Incumbent running for re-election. Brian Schatz (Democratic)[45]
Charles Collins (Republican)[57]
Idaho Mike Crapo Republican 1998
Incumbent running for re-election. Mike Crapo (Republican)[58]
Illinois Mark Kirk Republican 2010 Incumbent running for re-election. Mark Kirk (Republican)[59]
James Marter (Republican)[60]
Tammy Duckworth (Democratic)[61]
Napoleon Harris (Democratic)[62]
Andrea Zopp (Democratic)[63]
Indiana Dan Coats Republican 1989 (Appointed)
1990 (Special)
1998 (Retired)
Incumbent retiring. Baron Hill (Democratic)[64]
Marlin Stutzman (Republican)[65]
Todd Young (Republican)[66]
Iowa Chuck Grassley Republican 1980
Incumbent running for re-election. Chuck Grassley (Republican)[67]
Rob Hogg (Democratic)[68]
Tom Fiegen (Democratic)[69]
Bob Krause (Democratic)[70]
Kansas Jerry Moran Republican 2010 Incumbent running for re-election. Jerry Moran (Republican)[71]
Patrick Wiesner (Democrat)[72]
Kentucky Rand Paul Republican 2010 Incumbent running for re-election. Jim Gray (Democratic)[73]
Rory Houlihan (Democratic)[74]
Jeff Kender (Democratic)[75]
Ron Leach (Democratic)[76]
Tom Recktenwald (Democratic)[75]
Grant Short (Democratic)[75]
Sellus Wilder (Democratic)[77]
James Gould (Republican)[75]
Rand Paul (Republican)[78]
Stephen Slaughter (Republican)[75]
Louisiana David Vitter Republican 2004
Incumbent retiring. Charles Boustany (Republican)[79]
Joseph Cao (Republican)[80]
John Fleming (Republican)[81]
John Kennedy (Republican)[82]
Rob Maness (Republican)[83]
Troy Hebert (Independent)[84]
Caroline Fayard (Democratic)[85]
Maryland Barbara Mikulski Democratic 1986
Incumbent retiring. Freddie Donald Dickson Jr.(Democratic)[86]
Donna Edwards (Democratic)[87]
Ralph Jaffe (Democratic)[86]
Theresa Scaldaferri (Democratic)[86]
Charles U. Smith (Democratic)[86]
Violet Staley (Democratic)[86]
Blaine Taylor (Democratic)[86]
Ed Tinus (Democratic)[86]
Chris Van Hollen (Democratic)[88]
Lih Young (Democratic)[86]
Chris Chafee (Republican)[86]
Sean Connor (Republican)[86]
Richard Douglas (Republican)[89]
John R. Graziani (Republican)[86]
Greg Holmes (Republican)[86]
Joseph David Hooe (Republican)[86]
Chrys Kefalas (Republican)[90]
Mark McNicholas (Republican)
Lynn Richardson (Republican)[86]
Anthony Seda (Republican)[86]
Richard Shawver (Republican)[86]
Kathy Szeliga (Republican)[91]
Dave Wallace (Republican)[86]
Garry T. Yarrington (Republican)[86]
Missouri Roy Blunt Republican 2010 Incumbent running for re-election. Roy Blunt (Republican)[92]
Christopher Batsche (Republican)[93]
Jason Kander (Democratic)[94]
MD Rabbi Alam (Democratic)[95]
Nevada Harry Reid Democratic 1986
Incumbent retiring. Catherine Cortez Masto (Democratic)[96]
Joe Heck (Republican)[97]
New Hampshire Kelly Ayotte Republican 2010 Incumbent running for re-election. Kelly Ayotte (Republican)[98]
Maggie Hassan (Democratic)[99]
New York Chuck Schumer Democratic 1998
Incumbent running for re-election. Chuck Schumer (Democratic)[45]
North Carolina Richard Burr Republican 2004
Incumbent running for re-election. Richard Burr (Republican)[100]
Greg Brannon (Republican)[101]
Larry Holmquist (Republican)[102]
Paul Wright (Republican)[103]
Deborah Ross (Democratic)[104]
Chris Rey (Democratic)[105]
Kevin Griffin (Democratic)[106]
Ernest Reeves (Democratic)[107]
North Dakota John Hoeven Republican 2010 Incumbent running for re-election. John Hoeven (Republican)[108]
Robert Marquette (Libertarian)[109]
Ohio Rob Portman Republican 2010 Incumbent running for re-election. Rob Portman (Republican)[110]
Don Elijah Eckhart (Republican)[111]
P.G. Sittenfeld (Democratic)[112]
Ted Strickland (Democratic)[113]
Kelli Prather (Democratic)[114]
Oklahoma James Lankford Republican 2014 (Special) Incumbent running for re-election. James Lankford (Republican)[45]
Oregon Ron Wyden Democratic 1996 (Special)
Incumbent running for re-election. Mark Callahan (Republican)[115]
Dan Laschober (Republican)[116]
Faye Stewart (Republican)[117]
Kevin Stine (Democratic)[118]
Ron Wyden (Democratic)[45]
Pennsylvania Pat Toomey Republican 2010 Incumbent running for re-election. Pat Toomey (Republican)[119]
Everett Stern (Republican)[120]
Kathleen McGinty (Democratic)[121]
Joe Sestak (Democratic)[122]
John Fetterman (Democratic)[123]
South Carolina Tim Scott Republican 2013 (Appointed)
2014 (Special)
Incumbent running for re-election. Tim Scott (Republican)[45]
Joyce Dickerson (Democratic)[124]
South Dakota John Thune Republican 2004
Incumbent running for re-election. John Thune (Republican)[125]
Utah Mike Lee Republican 2010 Incumbent running for re-election. Mike Lee (Republican)[126]
Jonathan Swinton (Democrat)[127]
Vermont Patrick Leahy Democratic 1974
Incumbent running for re-election. Patrick Leahy (Democratic)[128]
Washington Patty Murray Democratic 1992
Incumbent running for re-election. Patty Murray (Democratic)[129]
Chris Vance (Republican)[130]
Wisconsin Ron Johnson Republican 2010 Incumbent running for re-election. Russ Feingold (Democratic)[131]
Ron Johnson (Republican)[132]

Complete list of races[edit]

Thirty-four seats are up for election in 2016:

  • 7 Democrats and 21 Republicans are seeking re-election.
  • 6 Senators (3 Democrats, 3 Republicans) are retiring.


Five-term Senator Richard Shelby (Republican) was re-elected with 65.3% of the vote in 2010. He will be 82 years old in 2016. He served in the Senate as a Democrat until switching parties in 1994. Shelby is running for re-election, and is facing four challengers in the Republican primary: ex-state Senator Shadrack McGill, former Marine and Birmingham businessman Jonathan McConnell, Marcus Bowman, and John Martin.[133]

There are two Democratic candidates: Ron Crumpton, patient rights advocate.[16][134] and Charles Nana.[133]


Two-term Senator Lisa Murkowski (Republican) was appointed in 2002 and elected to a full term in 2004. She was defeated in the Republican primary in 2010 by Joe Miller. She later ran as a write-in candidate in the 2010 general election and was re-elected to a second full term with 39.5% of the vote, making her one of two senators in US history to win election via write-in votes. She will be 59 years old in 2016 and is running for re-election.[17]

One Republican, a candidate for the State House in 2006, Thomas Lamb, has filed to run against Murkowski.[18] Other potential Republican primary challengers include 2010 nominee and 2014 candidate Joe Miller, State Senator Mike J. Dunleavy, former Lieutenant Governor Mead Treadwell, and former Mayor of Anchorage Dan Sullivan.[135]

Potential Democratic candidates include former U.S. Senator Mark Begich,[136] State Senator Dennis Egan, State Representative Andy Josephson, State Senator Bill Wielechowski, State Senator Hollis French and State Senate Minority Leader Johnny Ellis.[137]


Five-term Senator and Republican Presidential candidate in 2008 John McCain was re-elected with 59.3% of the vote in 2010. He will be 80 years old in 2016. Despite speculation that he might retire,[138] McCain is running for re-election.[22]

McCain may face a strong primary challenge, particularly from Tea Party groups.[139][140] Fair Tax activist Alex Meluskey,[23] businessman David Pizer,[24] talk radio host Clair Van Steenwyk,[25] and State Senator Kelli Ward[26] are running for the Republican nomination. Representatives Matt Salmon and David Schweikert were both mentioned as possible candidates,[141] but both chose not to run.[142][143] Other potential Republican candidates include former Governor Jan Brewer,[144] businesswoman and 2014 gubernatorial candidate Christine Jones,[145] former Governor of Alaska and 2008 Vice presidential candidate Sarah Palin,[146] former U.S. Representative John Shadegg,[147] and former Arizona Attorney General Grant Woods,.[147]

Congresswoman Ann Kirkpatrick[21] and teacher Lennie Clark[20] are running for the Democratic nomination. Other potential Democratic candidates include U.S. Representative Ruben Gallego, former Surgeon General and 2012 nominee Richard Carmona, 2014 gubernatorial nominee Fred DuVal, Phoenix Mayor Greg Stanton, and retired astronaut Mark Kelly, who is the husband of ex-Congresswoman Gabrielle Giffords.[148][149]


One-term Senator John Boozman (Republican) defeated two-term Senator Blanche Lincoln with 58.0% of the vote in 2010. He will be 65 years old in 2016. Despite speculation that he might retire following health problems,[150][151] Boozman is running for re-election.[27] Fellow Republican Curtis Coleman, who ran against Boozman in 2010 but came in fifth place, is running again.[28]

Connor Eldridge, the former U.S. Attorney for the Western District of Arkansas, is the only Democrat who met the filing deadline.[152]

Frank Gilbert is the candidate for the Libertarian Party,[30][153][154] and Jason Tate is running a write-in campaign.[155]


Four-term Senator Barbara Boxer (Democrat) was re-elected with 52.1% of the vote in 2010. Boxer declined to run for re-election.[156]

California Attorney General Kamala Harris is running for the Democratic nomination,[31] as is U.S. Representative Loretta Sanchez.[32] Other potential Democratic candidates include U.S. Representative John Garamendi and former US Army Secretary Louis Caldera.[157][158] Among the potential candidates who declined to run were Governor Jerry Brown, Lieutenant Governor Gavin Newsom, U.S. Representatives Xavier Becerra and Adam Schiff, and Mayor Eric Garcetti.

Former State Party Chairs Tom Del Beccaro[33] and Duf Sundheim[34] are running for the Republican nomination, along with John Estrada,[159] Mark Hardie,[160] Don Krampe,[161] Tom Palzer,[162] Al Ramirez,[163] and Karen Roseberry.[164] State Assemblymen Rocky Chavez was running as well,[165] but has withdrawn from the race.[166] Other potential Republican candidates include former U.S. Representatives Mary Bono, David Drier, and Doug Ose, President and CEO of Hewlett-Packard and nominee for Governor in 2010 Meg Whitman, former Lieutenant Governor of California Abel Maldonado, former State Assemblyman and 2014 gubernatorial candidate Tim Donnelly, and former State Senator Phil Wyman. Republicans who were once considered potential candidates but ruled out runs include San Diego Mayor Kevin Faulconer, former Assistant Secretary of the Treasury for Financial Stability and 2014 gubernatorial nominee Neel Kashkari, U.S. Representative Darrell Issa and businesswoman and nominee for the U.S. Senate in 2010 Carly Fiorina.[167]

Independent Mike Beitiks is running on a single-issue climate change platform.[168]

Polling conducted by the Field Poll in October 2015 (months before Chavez withdrew from the race) indicates that Harris is well ahead in the race so far, having support of 30% of likely voters, compared to Rep. Sanchez with 17%, Assemblyman Chavez with 9%, Del Beccaro with 6%, and Sundheim with 3%.[169]


One-term Senator Michael Bennet (Democrat) was appointed in 2009 and elected to a full term with 47.7% of the vote in 2010. He will be 51 years old in 2016. He is running for re-election.[35]

Businessman Robert Blaha,[36] former Aurora councilman Ryan Frazier,[37] El Paso County Commissioners Darryl Glenn,[38] and Peggy Littleton,[41] former Colorado State University Athletic Director Jack Graham,[39] State Representative Jon Keyser,[40] former SBA director Greg Lopez,[42] State Senator Tim Neville,[43] and Jefferson County Commissioner Donald Rosier[44][170] are running for the Republican nomination. Other potential Republican candidates include State Treasurer Walker Stapleton, former Secretary of State Scott Gessler, State Senator Owen Hill, U.S. Representative Ken Buck, former State Representatives Amy Stephens and Rob Witwer, and former United States Secretary of the Interior Gale Norton.[171][172][173]


One-term Senator Richard Blumenthal (Democrat) was elected with 55.1% of the vote in 2010. He will be 70 years old in 2016. He is running for re-election.[45]

Former Olympic athlete August Wolf[46] is running for the Republican nomination. Economist and former CNBC television host Lawrence Kudlow is exploring a run as well.[174][175] Another potential candidate is former West Hartford Town Councilor Joe Visconti, who ran for CT-01 in 2008 and ran as an Independent for Governor in 2014.[176] Former U.S. Comptroller General and 2014 candidate for Lieutenant Governor David M. Walker[177][178] and former U.S. Representative and 2010 candidate Rob Simmons declined to run for the Republican nomination.[179]


One-term Senator Marco Rubio (Republican) was elected in a three-way race with 48.9% of the vote in 2010. In April 2014, Rubio stated that he would not run for both the Senate and President in 2016, as Florida law prohibits a candidate from appearing twice on a ballot.[180] In April 2015, he announced that he would run for President and would not seek re-election.[181]

U.S. Representatives Ron DeSantis and David Jolly, Lieutenant Governor Carlos Lopez-Cantera, and combat veteran Todd Wilcox are running for the Republican nomination.[182] Other potential Republican candidates include Florida Commissioner of Agriculture Adam Putnam, U.S. Representatives Curt Clawson and Ted Yoho, former Mayor of St. Petersburg Rick Baker, and Bill McCollum, former Florida Attorney General, former U.S. Representative, nominee for U.S. Senate in 2000, candidate in 2004, and candidate for Governor in 2010.[183][184][185]

U.S. Representatives Patrick Murphy[51] and Alan Grayson,[52] and attorney Pam Keith[53] are running for the Democratic nomination. Other potential candidates include U.S. Representative Gwen Graham[186] and former Minority Leader of the Florida House of Representatives Dan Gelber.[187]


Two-term Senator Johnny Isakson (Republican) was re-elected with 58.1% of the vote in 2010. He will be 71 years old in 2016. He is running for re-election.[56] In 2015, Isakson announced he was being treated for Parkinson's disease, but stated that his treatment would not interfere with his re-election campaign or his ability to serve another term.[188]

Derrick Grayson, candidate for the state's other Senate seat in 2014,[55] and teacher Lee Benedict are running against Isakson for the Republican nomination.[54] Other potential candidates include former U.S. Representative Paul Broun and U.S. Representative Tom Price.[189][190] Former Florida U.S. Representative Allen West has ruled out running for the seat.[56]

Potential Democratic candidates include State Representatives James Beverly, Spencer Frye, Scott Holcomb, and David Wilkerson, Atlanta City Councilman Alex Wan,[191] and former President of the Georgia School Boards Association, Valarie Wilson.[192] Atlanta Mayor Kasim Reed has ruled out a run.[193]


In 2012, Hawaii Governor Neil Abercrombie appointed Lieutenant Governor Brian Schatz (Democrat) to take the place of deceased nine-term Senator Daniel Inouye. Schatz won a 2014 special election to serve the remainder of Inouye's term. Schatz is running for re-election.[45]

Former U.S. Representative and 2014 Senate candidate Colleen Hanabusa may challenge Schatz in the primary again,[194] while U.S. Representative Tulsi Gabbard declined to seek the Democratic nomination for the seat.[195]

Charles Collins, a Republican who ran for the Senate in 2012 and for Governor in 2014, is seeking the nomination again this year.[57]


Three-term Senator Mike Crapo (Republican) was re-elected with 71.1% of the vote in 2010. Crapo will be 65 years old in 2016. He is seeking re-election to a fourth term.[58] U.S Representative Raul Labrador declined to challenge Crapo in the Republican primary.[196][197]


One-term Senator Mark Kirk (Republican) was elected with 48.4% of the vote in 2010. He will be 57 years old in 2016. Kirk suffered a stroke in January 2012 that kept him away from the Senate until January 2013.[198] In June 2013 he confirmed that he was planning to run for re-election,[199] but there has been some speculation that he might retire.[200] In November 2014, Kirk reiterated that he was going to run for re-election, saying: "no frickin' way am I retiring."[201]

Joe Walsh, a former U.S. Representative and conservative talk radio host, declined to challenge Kirk in the Republican primary.[202] Two others filed for the right to challenge Senator Kirk in the primary: businessman James Marter,[60] and Elizabeth Pahlke,[203] but Pahlke has been disqualified, so only Martin will be on the ballot running against Sen. Kirk.[204]

U.S. Representative Tammy Duckworth,[205] President and CEO of the Chicago Urban League Andrea Zopp,[206] and State Senator Napoleon Harris are running for the Democratic nomination.[207][208]

Jim Brown, a teacher and former businessman, has announced he is running as an independent.[209]

Chris Aguayo, an Iraq/Afghan war Veteran and Veterans Party State Chair, has announced he is running representing the Veterans Party.[210]


Three-term Senator Dan Coats (Republican) was elected with 54.6% of the vote in 2010; Coats served in the Senate from 1989 to 1999 and then returned to serve another term from 2010 to 2016. Coats is not running for re-election.[211] Republican candidates include U.S. Representatives Marlin Stutzman,[65] and Todd Young.[66] Coats's chief of Staff Eric Holcomb was a candidate but withdrew from the race.[212][213]

Former U.S. Representative Baron Hill is running for the Democratic nomination.[64] Former non-profit director John Dickerson also announced he was going to run, but has suspended his campaign.[214][215]


Six-term Senator Chuck Grassley (Republican) was re-elected with 64.5% of the vote in 2010. He will be 83 years old in 2016. Grassley is running for re-election.[216][217]

If Grassley should change his mind and retire, potential Republican candidates would include U.S. Representative Steve King, former U.S. Representative Tom Latham, and State Representative and Grassley's grandson Pat Grassley.[148][218]

Former State Senator Tom Fiegen, current State Senator Rob Hogg, and former State Representative Bob Krause are running for the Democratic nomination. Other potential Democratic candidates include US Agriculture Secretary and former Governor Tom Vilsack, U.S. Representative Dave Loebsack, former First Lady and 2012 IA-04 nominee Christie Vilsack, Senate Majority Leader Michael Gronstal, former Governor Chet Culver, and retired NFL quarterback Kyle Orton.[148][217][219][220]


One-term Senator Jerry Moran (Republican) was elected with 70.3% of the vote in 2010. He will be 62 years old in 2016. He is running for re-election.[71] Radiologist and 2014 Senate candidate Milton Wolf is a potential primary challenger for Moran, while U.S. Representative Tim Huelskamp declined to run.[71][148][221][222]

Patrick Wiesner, an attorney and a candidate for the Senate in 2010 and 2014, has filed to run for the Democratic nomination.[72] Other potential candidates include Wichita Mayor Carl Brewer, 2014 Governor nominee Paul Davis, former Kansas City Mayor Joe Reardon, former U.S. Representative and 2008 nominee Jim Slattery, and 2014 KS-02 nominee Margie Wakefield.[148]

2014 Independent Senate candidate Greg Orman could run again, either as an Independent or a Democratic candidate.[148]


One-term Senator Rand Paul (Republican) was elected with 55.7% of the vote in 2010. He will be 53 years old in 2016. Paul has filed for re-election,[78] although he was also running for President of the United States in 2016.[223] Although Kentucky law does not allow for a candidate to appear twice on the same ballot, Paul successfully convinced the Kentucky GOP to adopt a caucus system for 2016, allowing Paul to run for president and for the Senate simultaneously.[224] Kentucky law still bars Paul from appearing twice on the ballot in the general election.[224] However, on February 3, 2016, Paul ended his campaign for the presidency and will run for reelection.[225] James Gould and Stephen Slaughter have filed to run against Paul.[75]

Lexington Mayor Jim Gray,[73] Rory Houlihan,[74] Ron Leach,[76] and Sellus Wilder[77] are running for the Democratic nomination, as are Jeff Kender, Tom Recktenwald (who was a candidate in 2014), and Grant Short.[75]


Two-term Senator David Vitter (Republican) was re-elected with 56.6% of the vote in 2010. After losing the 2015 gubernatorial race, Vitter chose to retire from the Senate at the end of his term.[45][226]

U.S. Representatives Charles Boustany[79] and John Fleming,[81] former U.S. Representative Joseph Cao,[80] State Treasurer John Neely Kennedy,[82] and retired U.S. Air Force Colonel Rob Maness.[83] are running for the Republican nomination. Other potential candidates are Public Service Commissioners Scott Angelle[227] and Erik Skrmetta,[228] 2014 candidate for LA-05 Zach Dasher,[228] and former State Representative Brett Geymann.[228]

Caroline Fayard, an attorney and candidate for Lieutenant Governor in 2010, is running for the Democratic nomination.[85] Other potential Democratic candidates include state legislators Katrina Jackson, Robert Johnson, Karen Carter Peterson, Eric LaFleur, and Gary Smith, Jr., former U.S. Representative Charlie Melancon, and Mayor of Alexandria Jacques Roy.[229][230][231] Former U.S. Senator Mary Landrieu and her brother, New Orleans Mayor Mitch Landrieu, declined to run.[232]


Five-term Senator Barbara Mikulski (Democrat) was re-elected with 61.8% of the vote in 2010. She is the longest-serving female Senator and the longest-serving woman in the history of the U.S. Congress. She is not seeking reelection.[233]

The candidates who have filed for the Democratic nomination are: U.S. Representatives Donna Edwards[87] and Chris Van Hollen,[88] Freddie Donald Dickson, Jr., Ralph Jaffe, Theresa Scaldaferri, Charles Smith, Violate Staley, Blaine Taylor, Ed Tinus, and Lih Young.[86]

The Republican candidates who have filed are former Deputy Assistant Secretary of Defense and Senate candidate in 2012 Richard Douglas,[89] Chrys Kefalas,[90] State Delegate Kathy Szeliga,[91] Chris Chaffee, Sean Connor, John Graziani, Greg Holmes, Joseph David Hooe, Mark McNicholas, Lynn Richardson, Anthony Seda, Richard Shawver, Dave Walle, and Garry T. Yarrington.[86]


One-term Senator Roy Blunt (Republican) was elected with 54.3% of the vote in 2010. He will be 66 years old in 2016. He is running for re-election.[92] Christopher Batsche is challenging Blunt in the GOP primary.[93] Former U.S. Representative and 2012 Senate nominee Todd Akin was rumored to be a possible candidate, but declined to run.[234][235]

For the Democrats, Secretary of State Jason Kander[94] and Democratic Party Asian American Caucus chairman MD Rabbi Alam are running.[95][236] Governor Jay Nixon and State Treasurer Clint Zweifel chose not to seek election to the Senate.[237][238]


Five-term Senator and Senate Minority Leader Harry Reid (Democrat) was re-elected with 50.2% of the vote in 2010. Reid is not seeking re-election.[239] Former Nevada Attorney General Catherine Cortez Masto is seeking the Democratic nomination.[96] Congressman Joe Heck is seeking the Republican nomination.[97]

New Hampshire[edit]

One-term Senator Kelly Ayotte (Republican) was elected with 60.2% of the vote in 2010. She will be 48 years old in 2016. Ayotte is running for re-election.[98] She has also been speculated to be a potential candidate for the Republican nomination for Vice President of the United States in 2016.[240] If she is the Vice Presidential nominee, she can appear on the ballot twice and run for re-election at the same time.[240][241] If she does run, Ayotte may face a primary challenge from the Tea Party.[241]

Governor Maggie Hassan is running for the Democratic nomination.[99] Other potential candidates include Executive Councilor Chris Pappas, State Senators Dan Feltes and Donna Soucy, Portsmouth City Councilor and daughter of U.S. Senator Jeanne Shaheen Stefany Shaheen, and campaign manager for Senator Shaheen Mike Vlacich.[242]

RealClearPolitics has taken three polls conducted in January 2016 by PPP, Gravis, and NBC/WSJ/Marist, averaged them to calculate that Sen. Ayotte is leading Gov. Hassan by 46.0% to 41.3%.[243]

New York[edit]

Three-term Senator Chuck Schumer (Democrat) was re-elected with 66% of the vote in 2010. He will be 66 years old in 2016. He is running for re-election.[45] If reelected, Chuck Schumer is widely expected to succeed Harry Reid as the leader of the Senate Democrats.[244]

Potential Republican candidates include U.S. Representatives Chris Gibson and Peter T. King.[245] U.S. Representative Richard L. Hanna, Manhattan Republican Party Chairwoman Adele Malpass, and former CNBC television host Larry Kudlow[246] were also mentioned as possible candidates, but all have declined to run.[245][247]

North Carolina[edit]

Two-term Senator Richard Burr (Republican) was re-elected with 55% of the vote in 2010. He will be 61 years old in 2016. There had been speculation that Burr might retire,[248] but he is running for re-election.[100][249]

Three Republicans have announced they are challenging Senator Burr in the primary: Greg Brannon,[101] Larry Holmquist,[102] and former Superior Court Judge Paul Wright.[103]

Former state representative Deborah Ross,[104] Spring Lake Mayor Chris Rey,[105] businessman Kevin Griffin,[106] and retired U.S. Army Captain Ernest Reeves[107] are running for the Democratic nomination. Former U.S. Senator Kay Hagan,[250] state treasurer Janet Cowell,[251] and Anthony Foxx, the United States Secretary of Transportation and former Mayor of Charlotte, declined to run.[252]

Polling conducted by Public Policy Polling in January 2016 found Burr leading Deborah Ross 43% to 33%, leading Kevin Griffin 42% to 35%, and leading Chris Rey 44% to 32%.[253]

North Dakota[edit]

One-term Senator John Hoeven (Republican) was elected with 76.2% of the vote in 2010. He will be 59 years old in 2016. He is running for re-election.[108]

Potential Democratic candidates include state Senator George B. Sinner, state Representative Corey Mock, and USDA State Director Jasper Schneider.[254]

On November 7, 2015, the Libertarian party nominated Robert Marquette.


One-term Senator Rob Portman (Republican) was elected with 57.3% of the vote in 2010. He will be 60 years old in 2016. He is running for re-election. Portman is considered a potential candidate for Vice President in 2016.[255][256][257] He has ruled out running for two offices at the same time, even though Ohio law does allow it.[258] He had considered running for President, but decided not to.[110] Potential Republican candidates if Portman vacates the seat include Ohio State Treasurer Josh Mandel and U.S. Representative Steve Stivers.[255]

The National Organization for Marriage and other socially conservative groups, unhappy with Portman's public backing for same-sex marriage, have pledged to back a primary challenger. Tea Party groups, who heavily backed Portman in 2010, have said that they are unlikely to do the same if he runs for re-election.[citation needed] Two candidates filed to challenge him: Don Elijah Eckhart, who ran for OH-15 as an independent in 2008,[111] and Melissa Strzala, but Strzala was disqualified.[259]

Former Governor Ted Strickland, Cincinnati City Councilman P.G. Sittenfeld, and occupational therapist Kelli Prather are running for the Democratic nomination.[112][260][114] Former State Representative Bob Hagan had filed papers to run[261] but later withdrew from the race.[262]


Two-term Senator Tom Coburn (Republican) was re-elected with 70.64% of the vote in 2010, but chose to leave office before the end of his term after being diagnosed with prostate cancer. James Lankford won the 2014 special election to serve the remainder of Coburn's term.[263] Lankford is running for re-election.[45]

Former Congressman Dan Boren is viewed by some Oklahoma political operatives as the only Democrat who could make the 2016 race competitive, but is seen as unlikely to run.[264] Lankford's 2014 special election opponent Constance N. Johnson has said that she plans to run again.[265]


Three-term Senator Ron Wyden (Democrat) was re-elected with 57.3% of the vote in 2010. He will be 67 years old in 2016. He is running for re-election.[45]

Medford City Councilor Kevin Stine is challenging Wyden for the Democratic nomination.[118]

Information technology consultant and 2014 candidate Mark Callahan,[115] business consultant Dan Laschober,[116] and Lane County commissioner Faye Stewart[117] are running for the Republican nomination.


One-term Senator Pat Toomey (Republican) was elected with 51% of the vote in 2010. He will be 54 years old in 2016. Toomey is seeking re-election.[119]

Everett Stern, a security intelligence consultant and whistleblower of the HSBC money laundering scandal, is challenging Toomey for the Republican nomination.[120]

Democratic candidates include Katie McGinty, former Chief of Staff to Governor Tom Wolf and former Secretary of the Pennsylvania Department of Environmental Protection,[121] former Congressman Joe Sestak, who defeated incumbent Senator Arlen Specter for the 2010 Democratic nomination, but lost to Toomey in the general election,[122] and current mayor of Braddock, Pennsylvania, John Fetterman,[123] who is an AmeriCorps alum and Harvard University graduate.[266]

Other potential Democratic candidates include state senator Vincent Hughes, former U.S. Representative Chris Carney, and Philadelphia District Attorney Seth Williams.[267][268][269] Allentown Mayor Ed Pawlowski announced his candidacy for the seat but suspended his campaign due to an FBI investigation of Allentown.[270]

South Carolina[edit]

Two-term Republican Senator Jim DeMint (Republican) was re-elected with 61.48% of the vote in 2010. He resigned at the start of 2013 to become President of The Heritage Foundation and U.S. Representative Tim Scott (Republican) of South Carolina's 1st congressional district was appointed to replace him by Governor Nikki Haley.[271] Scott subsequently won the special election in 2014 for the remaining two years of the term. Scott is running for re-election[45] and he is also a potential Republican Vice Presidential nominee.[272][273]

If Scott becomes the Vice Presidential nominee and does not run for re-election, potential Republican candidates include Congressmen Mick Mulvaney,[274] Jeff Duncan and Mark Sanford, along with State Senator Tom Davis, State Treasurer Curtis Loftis and State Attorney General Alan Wilson.[272] Darla Moore has also been mentioned as a potential candidate for either party.[272]

On the Democratic side, 2014 nominee Joyce Dickerson, a member of the Richland County Council, has announced to run against Scott again.[124][275]

South Dakota[edit]

Two-term Senator John Thune (Republican) ran unopposed and was re-elected with 100% in 2010. He will be 55 years old in 2016. He is running for re-election.[125]

Potential Democratic candidates include former Congresswoman Stephanie Herseth Sandlin,[276] filmmaker and former television news producer Sam Hurst, State Senator Billie Sutton, former State Senator Frank Kloucek, former U.S. Senator Jim Abourezk, former U.S. Senator Tom Daschle, Sioux Falls Mayor Mike Huether, and State Senator Bernie Hunhoff.[277][278][279][280][281] 2014 nominee Rick Weiland declined to run again in 2016.[282]


One-term Senator Mike Lee (Republican) was elected with 61.6% of the vote in 2010. He will be 45 years old in 2016. He is running for re-election.[126]

Lee may face a primary challenge following his role in the unpopular 2013 federal government shutdown, which caused his approval ratings to drop drastically.[283][284][285] Changes to Utah's primary system, allowing candidates to bypass the party convention by collecting signatures to advance to the primary, could adversely affect Lee's chances at renomination.[286]

State party chair Thomas Wright, former State Senator Dan Liljenquist, State Senator Aaron Osmond, Congressman Jason Chaffetz, Congressman Chris Stewart, and Mitt Romney's son Josh Romney[283][284][287] have been mentioned as potential primary challengers, but they have declined to run.[288][289] Former Governor of Utah and former United States Secretary of Health and Human Services Mike Leavitt has also denied interest in running.[286]

Running for the Democratic nomination is marriage therapist Jonathan Swinton.[127] Former congressman Jim Matheson is a potential Democratic candidate, although he may instead choose to run for Governor of Utah.[287]


Seven-term Senator Patrick Leahy (Democrat) was re-elected with 64.4% of the vote in 2010. He will be 76 years old in 2016. Leahy is seeking re-election.[128]

The GOP nominee for Governor in 2014, Scott Milne, has indicated he may run against Leahy.[290]


Four-term Senator Patty Murray (Democrat) was re-elected with 52.15% of the vote in 2010. She will be 66 years old in 2016. She is running for re-election.[129]

The only declared Republican candidate is former State Representative and former chair of the Washington State Republican Party Chris Vance.[130] Congressman Dave Reichert was considered a potential Republican candidate[291] but chose to run for reelection.[292]


One-term Senator Ron Johnson (Republican) defeated three-term Senator Russ Feingold (Democrat) with 51.9% of the vote in 2010. He will be 61 years old in 2016. He is running for re-election.[132]

On May 14, 2015, Feingold announced that he would seek a rematch against Johnson for his former Senate seat.[131] Immediately after his announcement, the Democratic Senatorial Campaign Committee endorsed Feingold's candidacy.[293] Businesswoman and 2014 gubernatorial nominee Mary Burke has declared that she is not seeking statewide office in 2016.[294]

Polling by Wisconsin Public Radio in October 2015 showed Johnson losing a rematch to Feingold, 51% to 40%.[295]

See also[edit]


  1. ^ Subject to change if vacancies occur in Class 1 or Class 2 Senate seats.
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