2020 United States Senate elections

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2020 United States Senate elections

← 2018 November 3, 2020 2022 →

Class 2 (33 of the 100) seats in the United States Senate
(and 1 special election)
51 seats needed for a majority
  Mitch McConnell 2016 crop.jpg Chuck Schumer official photo (cropped).jpg
Leader Mitch McConnell Chuck Schumer
Party Republican Democratic
Leader since 2007 2017
Leader's seat Kentucky New York
Current seats 53 45
Seats needed Steady Increase 3–4[a]
Seats up 22 12

 
Party Independent
Current seats 2[b]
Seats up 0

United States Senate elections, 2020.svg
Seats up for election:
     Democratic incumbent      Retiring Democrat
     Republican incumbent      Retiring Republican
     No election

Incumbent Majority Leader

Mitch McConnell
Republican



Elections to the United States Senate will be held on November 3, 2020, with the 33 Class 2 seats of the Senate being contested in regular elections. The winners will be elected to six-year terms extending from January 3, 2021, until January 3, 2027. Additionally, there will be a special election in Arizona to fill the vacancy created by the death of John McCain in 2018.

In 2014, the last regularly-scheduled elections for Class 2 Senate seats, the Republicans won a net gain of nine seats from the Democrats and gained a majority in the Senate. Republicans defended that majority in 2016 and 2018, and held 53 Senate seats following the 2018 elections. Democrats held 45 seats after the 2018 elections, while independents caucusing with the Democratic Party held two seats.

Partisan composition[edit]

As of November 2018 (and including the 2020 special election in Arizona), Republicans are expected to defend 22 seats in 2020, while the Democratic Party is expected to defend only 12 seats. These figures could change if vacancies or party switches occur. Additional special elections may also be held in 2020 if vacancies should arise in Class 1 or Class 3 Senate seats.

Results summary[edit]

Parties Total
Democratic Independent Republican
Last election (2018) 45 2 53 100
Before this election 45 2 53 100
Not up 33 2 31 66
Class 1 (20182024) 21 2 10 33
Class 3 (2016→2022) 12 0 21 33
Up 12 0 22 34
Class 2 (2014→2020) 12 0 21 33
Special: Class 3 0 0 1 1
General elections
Incumbent retiring 0 2 2
Incumbent running 7 8 15
Intent undeclared 5 12 17

Change in composition[edit]

Each block represents one of the one hundred seats in the U.S. Senate. "D#" is a Democratic senator, "I#" is an Independent senator, and "R#" is a Republican senator. They are arranged so that the parties are separated and a majority is clear by crossing the middle.

Before the elections[edit]

Each block indicates an incumbent senator's actions going into the election.

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
D40
Ill.
Running
D39
Minn.
Running
D38
N.M.
Running
D37
N.J.
Running
D36
Mass.
Running
D35
Del.
Running
D34
Ala.
Running
D33 D32 D31
D41
Mich.
Undeclared
D42
N.H.
Undeclared
D43
Ore.
Undeclared
D44
R.I.
Undeclared
D45
Va.
Undeclared
I1 I2 R53
Tenn.
Retiring
R52
Kan.
Retiring
R51
Wyo.
Undeclared
Majority →
R41
Ariz.
Undeclared
R42
Colo.
Undeclared
R43
Idaho
Undeclared
R44
La.
Undeclared
R45
Me.
Undeclared
R46
Miss.
Undeclared
R47
Mont.
Undeclared
R48
Okla.
Undeclared
R49
S.D.
Undeclared
R50
W.Va.
Undeclared
R40
Alaska
Undeclared
R39
Texas
Running
R38
S.C.
Running
R37
N.C.
Running
R36
Neb.
Running
R35
Ky.
Running
R34
Iowa
Running
R33
Ga.
Running
R32
Ark.
Running
R31
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

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 TBD I2 I1 D33 D32 D31
TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD
Majority →
TBD
TBD TBD TBD TBD TBD TBD TBD TBD TBD
TBD TBD TBD TBD TBD TBD TBD TBD TBD R31
R30 R29 R28 R27 R26 R25 R24 R23 R22 R21
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10
Key:
D# Democratic
R# Republican
I# Independent, caucusing with Democrats

Pre-election predictions[edit]

Most election predictors use:

  • "tossup": no advantage
  • "tilt" (used sometimes): advantage that is not quite as strong as "lean"
  • "lean": slight advantage
  • "likely" or "favored": significant, but surmountable, advantage
  • "safe" or "solid": near-certain chance of victory
State PVI[1] Incumbent Last
Election[c]
Cook
Jan. 4,
2019
[2]
IE
Jan. 4,
2019
[3]
Sabato
Dec. 13,
2018
[4]
Alabama R+14 Doug Jones 50.0% D
(2017 Special)
Lean D Lean R (flip) Tossup
Alaska R+9 Dan Sullivan 48.0% R Safe R Safe R Safe R
Arizona
(Special)
R+5 Martha McSally 47.6% R
(2018)
Lean R Tossup Tossup
Arkansas R+15 Tom Cotton 56.5% R Safe R Safe R Safe R
Colorado D+1 Cory Gardner 48.2% R Lean R Tossup Tossup
Delaware D+6 Chris Coons 55.8% D Safe D Safe D Safe D
Georgia R+5 David Perdue 52.9% R Likely R Lean R Lean R
Idaho R+19 Jim Risch 65.3% R Safe R Safe R Safe R
Illinois D+7 Dick Durbin 53.5% D Safe D Safe D Safe D
Iowa R+3 Joni Ernst 52.1% R Safe R Likely R Lean R
Kansas R+13 Pat Roberts
(retiring)
53.1% R Likely R Safe R Safe R
Kentucky R+15 Mitch McConnell 56.2% R Likely R Safe R Likely R
Louisiana R+11 Bill Cassidy 55.9% R Safe R Safe R Safe R
Maine D+3 Susan Collins 68.5% R Lean R Tilt R Lean R
Massachusetts D+12 Ed Markey 61.9% D Safe D Safe D Safe D
Michigan D+1 Gary Peters 54.6% D Safe D Likely D Lean D
Minnesota D+1 Tina Smith 53.0% D
(2018 Special)
Likely D Likely D Likely D
Mississippi R+9 Cindy Hyde-Smith 53.6% R
(2018 Special)
Likely R Safe R Safe R
Montana R+11 Steve Daines 57.9% R Safe R Safe R Likely R
Nebraska R+14 Ben Sasse 64.5% R Safe R Safe R Safe R
New Hampshire EVEN Jeanne Shaheen 51.5% D Safe D Likely D Lean D
New Jersey D+7 Cory Booker 55.8% D Safe D Safe D Safe D
New Mexico D+3 Tom Udall 55.6% D Safe D Safe D Safe D
North Carolina R+3 Thom Tillis 48.8% R Likely R Tilt R Lean R
Oklahoma R+20 Jim Inhofe 68.0% R Safe R Safe R Safe R
Oregon D+5 Jeff Merkley 55.7% D Safe D Safe D Safe D
Rhode Island D+10 Jack Reed 70.6% D Safe D Safe D Safe D
South Carolina R+8 Lindsey Graham 55.3% R Safe R Safe R Safe R
South Dakota R+14 Mike Rounds 50.4% R Safe R Safe R Safe R
Tennessee R+14 Lamar Alexander
(retiring)
61.9% R Likely R Safe R Safe R
Texas R+8 John Cornyn 61.6% R Safe R Safe R Likely R
Virginia D+1 Mark Warner 49.1% D Safe D Safe D Likely D
West Virginia R+19 Shelley Moore Capito 62.1% R Safe R Safe R Safe R
Wyoming R+25 Mike Enzi 72.2% R Safe R Safe R Safe R

Race summary[edit]

Special elections during the preceding Congress[edit]

In this special election, the winner will serve when they are elected and qualified.

State
(linked to
summaries below)
Incumbent Results Candidates
Senator Party Electoral history
Arizona
(Class 3)
Martha McSally Republican 2019 (Appointed) Incumbent's intent undeclared. TBD

Elections leading to the next Congress[edit]

In these general elections, the winners will be elected for the term beginning January 3, 2021. All of the elections involve the Class 2 seats; ordered by state.

State
(linked to
summaries below)
Incumbent Results Candidates
Senator Party Electoral history
Alabama Doug Jones Democratic 2017 (Special) Incumbent running. Doug Jones (Democratic)[5]
Alaska Dan Sullivan Republican 2014 Incumbent's intent unknown. TBD
Arkansas Tom Cotton Republican 2014 Incumbent running. Tom Cotton (Republican)[6]
Colorado Cory Gardner Republican 2014 Incumbent's intent unknown. Derrick Blanton (Democratic)[7]
Lorena Garcia (Democratic)[8]
Dustin Leitzel (Democratic)[9]
Keith Pottratz (Democratic)[10]
Delaware Chris Coons Democratic 2010 (Special)
2014
Incumbent running. Chris Coons (Democratic)[11]
Georgia David Perdue Republican 2014 Incumbent running. David Perdue (Republican)[12]
Idaho Jim Risch Republican 2008
2014
Incumbent's intent unknown. TBD
Illinois Dick Durbin Democratic 1996
2002
2008
2014
Incumbent running. Dick Durbin (Democratic)[13]
Omeed Mema (Republican)[14]
Anne Stava-Murray (Democratic)[15]
Iowa Joni Ernst Republican 2014 Incumbent running. Joni Ernst (Republican)[16]
Paul Rieck (Republican)[17]
Kansas Pat Roberts Republican 1996
2002
2008
2014
Incumbent retiring. Elliott Adams (Democratic)[18]
Jacob LaTurner (Republican)[19]
Kentucky Mitch McConnell Republican 1984
1990
1996
2002
2008
2014
Incumbent running. Steven Cox (Democratic)[20]
Mitch McConnell (Republican)[21]
Louisiana Bill Cassidy Republican 2014 Incumbent's intent unknown. TBD
Maine Susan Collins Republican 1996
2002
2008
2014
Incumbent's intent unknown. Michael Bunker (Democratic)[22]
Max Linn (Republican)[23]
Cathleen London (Democratic)[24]
Massachusetts Ed Markey Democratic 2013 (Special)
2014
Incumbent running. Ed Markey (Democratic)[25]
Michigan Gary Peters Democratic 2014 Incumbent's intent unknown. TBD
Minnesota Tina Smith Democratic 2018 (Appointed)
2018 (Special)
Incumbent running. Tina Smith (Democratic)[26]
Mississippi Cindy Hyde-Smith Republican 2018 (Appointed)
2018 (Special)
Incumbent's intent unknown. TBD
Montana Steve Daines Republican 2014 Incumbent's intent unknown. TBD
Nebraska Ben Sasse Republican 2014 Incumbent's intent unknown. TBD
New Hampshire Jeanne Shaheen Democratic 2008
2014
Incumbent's intent unknown. TBD
New Jersey Cory Booker Democratic 2013 (Special)
2014
Incumbent's intent unknown. TBD
New Mexico Tom Udall Democratic 2008
2014
Incumbent running. Tom Udall (Democratic)[27]
North Carolina Thom Tillis Republican 2014 Incumbent running. Eva F. Lee (Democratic)[28]
Thom Tillis (Republican)[16]
Oklahoma Jim Inhofe Republican 1994 (Special)
1996
2002
2008
2014
Incumbent's intent unknown. TBD
Oregon Jeff Merkley Democratic 2008
2014
Incumbent's intent unknown. TBD
Rhode Island Jack Reed Democratic 1996
2002
2008
2014
Incumbent's intent unknown. TBD
South Carolina Lindsey Graham Republican 2002
2008
2014
Incumbent running. Lindsey Graham (Republican)[29]
Peggy Kandies (Republican)[30]
Mark Sloan (Republican)[31]
William Stone (Democratic)[32]
South Dakota Mike Rounds Republican 2014 Incumbent's intent unknown. TBD
Tennessee Lamar Alexander Republican 2002
2008
2014
Incumbent retiring. TBD
Texas John Cornyn Republican 2002
2008
2014
Incumbent running. John Cornyn (Republican)[33]
Sema Hernandez (Democratic)[34]
Virginia Mark Warner Democratic 2008
2014
Incumbent's intent unknown. TBD
West Virginia Shelley Moore Capito Republican 2014 Incumbent's intent unknown. TBD
Wyoming Mike Enzi Republican 1996
2002
2008
2014
Incumbent's intent unknown. TBD

Alabama[edit]

Incumbent Democrat Doug Jones was elected in a special election in 2017, narrowly defeating controversial Republican candidate Roy Moore. Jones will be up for re-election for a second term beginning January 3, 2021. Potential Republican candidates include former U.S. Attorney General and senator Jeff Sessions, state senator Del Marsh, and U.S. Representative Bradley Byrne.

Alaska[edit]

One-term incumbent Republican Dan Sullivan was elected to a first term in 2014, defeating one-term incumbent Mark Begich.

Arizona (Special)[edit]

Six-term Republican senator John McCain died on August 25, 2018.[35] Governor Doug Ducey was required by state law to appoint a new senator of the same party as McCain, and then the seat would be up for a special election in November 2020 and this will determine who serves the remainder of the term until January 3, 2023.[36] On September 4, Governor Ducey appointed former Arizona senator Jon Kyl to fill McCain's vacancy. Kyl only committed to serving until at least the end of the 115th United States Congress,[37] resigning at the end of 2018. Governor Ducey appointed outgoing Congresswoman Martha McSally to the seat for the 116th United States Congress.[38]

Potential Democratic candidates include former state Attorney General Grant Woods, former astronaut Mark Kelly, Congressman Ruben Gallego, and Congressman Greg Stanton.[39]

Arkansas[edit]

One-term incumbent Republican Tom Cotton was elected to a first term in 2014, defeating two-term incumbent Mark Pryor.

Colorado[edit]

One-term incumbent Republican Cory Gardner was elected to a first term in 2014, defeating one-term incumbent Mark Udall.

Community organizer Lorena Garcia,[40] Derrick Blanton, and pharmacist Dustin Leitzel are running for the Democratic nomination.[7][9] Potential Democratic candidates include biomedical scientist Trish Zornio,[41][42] Boulder County District Attorney Stan Garnett,[43] former state senator Mike Johnston, former Governor John Hickenlooper, Congressman Ed Perlmutter, and Crisanta Duran, the former speaker of the Colorado House of Representatives.[39][44]

Delaware[edit]

One-term Democrat Chris Coons was re-elected in 2014; Coons first took office after winning a 2010 special election, which occurred after long-time Senator Joe Biden resigned his seat to become Vice President of the United States.

Georgia[edit]

One-term incumbent Republican David Perdue was elected to a first term in 2014. He will be 70 on Election Day 2020.

Columbus Mayor Teresa Tomlinson is considering running for the Democratic nomination.[45] Other potential Democratic candidates include 2018 gubernatorial nominee Stacey Abrams[46], State Representative Scott Holcomb, State Senator Jen Jordan, former Atlanta Mayor Kasim Reed and former Points of Light CEO and 2014 nominee Michelle Nunn.[47][48]

Idaho[edit]

Two-term incumbent Republican Jim Risch was re-elected in 2014.

Illinois[edit]

Four-term incumbent and Senate Minority Whip Dick Durbin, a Democrat, was re-elected in 2014. Durbin will be 75 on Election Day in 2020, and has not yet indicated whether he will seek a fifth term. Potential Democratic candidates, should Durbin retire, are former IL Attorney General Lisa Madigan, Democratic Nominee for IL-13 in 2018, Betsy Dirksen Londrigan and Four-term incumbent IL-17 Representative Cheri Bustos. State Representative Anne Stava-Murray is running.

Potential Republican candidates include former Illinois Governor Bruce Rauner, U.S. Representatives Rodney Davis and Darin LaHood, and Republican Nominee for IL Attorney General in 2018 Erika Harold.

Iowa[edit]

One-term incumbent Republican Joni Ernst was elected to a first term in 2014.

Potential Democratic candidates include State Auditor Rob Sand, Congresswomen Cindy Axne and Abby Finkenauer, and former Governors Tom Vilsack and Chet Culver.[49]

Kansas[edit]

Four-term incumbent Republican Pat Roberts was re-elected in 2014, defeating independent candidate Greg Orman. Democrat Elliott Adams is running.[18] In January 2019, Roberts announced that he would not seek re-election.[50]

Kentucky[edit]

Six-term incumbent and Senate Majority Leader Republican Mitch McConnell was re-elected in 2014.

Steven Cox is running for the Democratic nomination.[20] Other potential Democratic candidates include state Attorney General Andy Beshear, 2018 congressional candidate Amy McGrath, and sports radio show host Matt Jones.[51]

Louisiana[edit]

One-term incumbent Bill Cassidy was first elected in 2014, defeating three-term incumbent Mary Landrieu.

Maine[edit]

Four-term incumbent Republican Susan Collins was re-elected in 2014.

Perennial candidate Max Linn is running for the Democratic nomination.[24] Other potential Democratic candidates include 2018 Senate candidate Zak Ringelstein, Speaker of the Maine House of Representatives Sara Gideon,[52] former United States Ambassador to the United Nations Susan Rice,[52] Congresswoman Chellie Pingree, Congressman Jared Golden, and 2018 gubernatorial candidate Betsy Sweet.[53]

Massachusetts[edit]

One-term incumbent Democrat Ed Markey was re-elected in 2014; Markey first took office after winning a 2013 special election.

Michigan[edit]

One-term incumbent Democrat Gary Peters was elected to a first term in 2014. 2018 Senate Candidate John James is the most likely Republican opponent.

Minnesota[edit]

Incumbent Democrat Tina Smith was appointed to replace Al Franken in 2018, and she won a special election later in 2018 to serve the remainder of Franken's term. Potential Republican candidates include former Congresswoman Michele Bachmann, 2018 lieutenant governor candidate Donna Bergstrom, and Senator Smith's opponent in the 2018 special election, state senator Karin Housley.

Mississippi[edit]

Seven-term incumbent Republican Thad Cochran resigned April 1, 2018 due to medical concerns. Governor Phil Bryant appointed Republican Cindy Hyde-Smith to hold office until January 3, 2019. A November 2018 special election determined Cochran's elected successor. No candidate garnered a majority of votes in the November 6, 2018 election; the top two candidates, Cindy Hyde-Smith and Democrat Mike Espy continued to a runoff on November 27, 2018. Cindy Hyde-Smith defeated Mike Espy and will serve the remainder of Cochran's term, which ends in January 2021.

Montana[edit]

One-term incumbent Republican Steve Daines was elected to a first term in 2014. Term-limited Governor Steve Bullock is a potential Democratic candidate.[54]

Nebraska[edit]

One-term incumbent Republican Ben Sasse was elected to a first term in 2014.

New Hampshire[edit]

Two-term incumbent Democrat Jeanne Shaheen was re-elected in 2014. Potential Republican challengers may include former U.S. Senator Kelly Ayotte[55] and U.S. Ambassador to New Zealand and Samoa Scott Brown.

New Jersey[edit]

One-term incumbent Democrat Cory Booker was re-elected in 2014; Booker first took office after winning a 2013 special election. Should Booker choose to run for President in 2020, potential Democratic nominees include incumbent governor Phil Murphy and incumbent Congressmen Donald Norcross and Josh Gottheimer.

New Mexico[edit]

Two-term incumbent Democrat Tom Udall was re-elected in 2014.

North Carolina[edit]

One-term incumbent Republican Thom Tillis was elected to a first term in 2014, narrowly defeating one-term incumbent Kay Hagan. Tillis could also potentially run for Governor.[56][57]

Tax attorney Eva Lee is running for the Democratic nomination.[28] Potential Democratic candidates include former United States Secretary of Transportation Anthony Foxx[58], state Senator Jeff Jackson,[39] and Mecklenburg County Commissioner Trevor Fuller.[59]

Oklahoma[edit]

Four-term incumbent Republican Jim Inhofe was re-elected in 2014. Former EPA Administrator Scott Pruitt may run for the seat if Inhofe retires.[60]

Oregon[edit]

Two-term incumbent Democrat Jeff Merkley was re-elected in 2014. Merkley may run for president and not for re-election to his Senate seat.[61]

Rhode Island[edit]

Four-term incumbent Democrat Jack Reed was re-elected in 2014.

South Carolina[edit]

Three-term incumbent Republican Lindsey Graham was re-elected in 2014.

South Dakota[edit]

One-term incumbent Republican Mike Rounds was elected to a first term in 2014 after serving two terms as Governor. Potential Democratic candidates may include state Senate Minority leader and 2018 gubernatorial candidate Billie Sutton.[62]

Tennessee[edit]

Three-term incumbent Republican Lamar Alexander was re-elected in 2014. He announced in December 2018 that he would not be seeking re-election.[63]

Texas[edit]

Three-term incumbent Republican John Cornyn was re-elected in 2014. He is running for re-election.[33]

Potential Democratic candidates may include former Congressman Beto O'Rourke, who was almost elected to the U.S. Senate in 2018.[64][65][66]

Virginia[edit]

Two-term incumbent Democrat Mark Warner was re-elected by a very narrow margin 2014.

West Virginia[edit]

One-term incumbent Republican Shelley Moore Capito was elected to a first term in 2014.

Wyoming[edit]

Four-term incumbent Republican Mike Enzi was re-elected in 2014. Congresswoman Liz Cheney may run again for the seat if Enzi chooses to retire.[67]

See also[edit]

Notes[edit]

  1. ^ Democrats would need to pick up four seats if the independents continue to caucus with the Democratic Party and the Democratic Party does not win the vice presidency.
    If the Democrats do win the vice presidency and the two Independents continue to caucus with them, then they will need a three seat gain to take control of the Senate.
  2. ^ The two independents, Bernie Sanders and Angus King, have both caucused with the Democratic Party since joining the Senate.
  3. ^ Incumbent in 2014, except where noted

References[edit]

  1. ^ "2016 State PVI Changes – Decision Desk HQ". decisiondeskhq.com. December 15, 2017.
  2. ^ "2020 Senate Race ratings". Cook Political Report. January 4, 2018.
  3. ^ "Senate Ratings 2020". Inside Elections. January 4, 2019.
  4. ^ "Senate 2020: Republican exposure on paper, but not necessarily in practice". Sabato's Crystal Ball. December 13, 2018.
  5. ^ Cohen, Zach [@Zachary_Cohen] (November 13, 2018). "#ALsen Doug Jones (D) confirms he'll seek reelection in 2020. "Already off and running."" (Tweet). Retrieved November 14, 2018 – via Twitter.
  6. ^ "Sen. Cotton says he's running for reelection in 2020". Associated Press.
  7. ^ a b "BLANTON, DERRICK JAMES - Candidate overview - FEC.gov". FEC.gov.
  8. ^ Zubeck, Pam (November 27, 2018). "Lorena Garcia announces challenge to Corey Gardner in 2020". Colorado Springs Independent. Retrieved November 30, 2018.
  9. ^ a b "LEITZEL, DUSTIN JOHN - Candidate overview - FEC.gov". FEC.gov.
  10. ^ "Keith Pottratz of Grand Junction bids for Cory Gardner's seat". Denver Post. December 2, 2018. Retrieved December 10, 2018.
  11. ^ "Meet the GOP's favorite Democrat".
  12. ^ Hallerman, Tamar; Bluestein, Greg (December 2, 2018). "Inside David Perdue's 2020 race for another U.S. Senate term". Atlanta Journal-Constitution. Retrieved December 3, 2018.
  13. ^ Sen Durbin: I'm running for reelection in 2020.
  14. ^ "Convicted skin-scam doctor fights back in court, on ABC7". ABC 7 Eyewitness News. Retrieved 2018-11-08.
  15. ^ https://www.facebook.com/StavaMurray/posts/339993383257346
  16. ^ a b Cohen, Zach C. (December 5, 2018). "How 2014's Outsiders Became 2020's Insiders". National Journal. Retrieved December 5, 2018.
  17. ^ classic.fec.gov https://classic.fec.gov/fecviewer/CommitteeDetailFilings.do?tabIndex=3&candidateCommitteeId=S0IA00143. Retrieved 2018-12-31. Missing or empty |title= (help)
  18. ^ a b "ADAMS, ELLIOTT - Candidate overview - FEC.gov". FEC.gov.
  19. ^ Shorman, Jonathan (January 8, 2019). "Kansas Treasurer LaTurner enters race to replace retiring Roberts in U.S. Senate". The Wichita Eagle. Retrieved January 8, 2019.
  20. ^ a b "COX, STEVEN JEWELL ISOM - Candidate overview - FEC.gov". FEC.gov.
  21. ^ Beam, Adam. "McConnell announces re-elect campaign at Fancy Farm picnic". Associated Press.
  22. ^ Weinland, Gerald [@DirigoBlue] (December 19, 2018). "Michael Bunker of Bangor has filed to run as a Dem against @SenatorCollins in 2020 #mepolitics #mesen" (Tweet) – via Twitter.
  23. ^ Thistle, Scott (June 8, 2018). "Federal judge rejects Max Linn's effort to run in Maine Republican primary". Portland Press Herald. Retrieved June 8, 2018.
  24. ^ a b Dr Cathleen London [@DrChaya] (July 16, 2018). "I am running because #SCOTUS cannot wait @SenatorCollins needs to realize that Maine & the country are watching & she will be held accountable for her votes #mepolitics My announcement: …" (Tweet) – via Twitter.
  25. ^ Guzman, Dan (October 5, 2018). "Markey Confirms Plans To Run For Re-Election In 2020". WBUR. Retrieved November 14, 2018.
  26. ^ Keen, Judy (July 9, 2018). "Tina Smith faces tough challengers in fight to keep U.S. Senate seat". Star Tribune. Retrieved December 7, 2018.
  27. ^ Monahan, Joe (November 8, 2018). "Flip Flop: Xochitl Takes It Back From Yvette; Plus: R's Running On Empty; Blame Game Underway, The Many Women Of The House, Ben Ray's Climb, Transition Time And Dona Ana Clerk Chaos". New Mexico Politics with Joe Monahan. Retrieved November 14, 2018.
  28. ^ a b Adams, Matthew (August 11, 2017). "The election isn't until 2020, but Tillis has a challenger". The News & Observer. Retrieved August 31, 2017.
  29. ^ "Sen. Lindsey Graham to run for reelection in 2020, has 'zero interest' in Trump appointment". One News Page. Retrieved December 7, 2018.
  30. ^ https://www.facebook.com/peggysenate/
  31. ^ https://marksloan.net
  32. ^ http://docquery.fec.gov/cgi-bin/forms/S0SC00263/1265634/
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  34. ^ "Sema for Texas". Retrieved 13 September 2018.
  35. ^ Tumulty, Karen. "John McCain, 'maverick' of the Senate and former POW, dies at 81". The Washington Post. Retrieved August 26, 2018.
  36. ^ "Who could be appointed to replace John McCain in the Senate, and the process behind it, explained". Vox. Retrieved August 26, 2018.
  37. ^ "Arizona governor names former Sen. Jon Kyl as McCain's replacement". CNN. Retrieved September 4, 2018.
  38. ^ Isenstadt, Alex. "Arizona Governor to Appoint Martha McSally to Senate". Politico. Retrieved November 18, 2018.
  39. ^ a b c Rogers, Alex; Foran, Claire (26 November 2018). "The race to control the Senate in 2020 has already started". CNN. Retrieved 30 November 2018.
  40. ^ Staver, Anna (November 27, 2018). "Sen. Cory Gardner gets his first official Democratic challenger for 2020". The Denver Post. Retrieved November 28, 2018.
  41. ^ Healy, Melissa (June 15, 2017). "Patricia Zornio, a biomedical researcher from a family of Trump supporters, hopes to stand up for science in the Senate". Los Angeles Times. Retrieved August 31, 2017.
  42. ^ Bunch, Joey (August 15, 2017). "Democrat Trish Zornio, scientist and community activist, weighing run against Gardner". Colorado Politics. Retrieved August 31, 2017.
  43. ^ Byars, Mitchell (July 7, 2017). "Boulder DA Stan Garnett won't run for Congress in 2018, but ponders 2020 Senate race". The Denver Post. Retrieved August 31, 2017.
  44. ^ Garcia, Nic (November 14, 2018). "Which Democrat will challenge U.S. Sen. Cory Gardner? Four names sit on top of insiders' lists". The Denver Post.
  45. ^ Williams, Chuck (May 10, 2017). "Mayor Teresa Tomlinson makes decision on running for 2018 statewide office". Ledger-Enquirer. Retrieved May 10, 2017.
  46. ^ https://www.cnn.com/2019/01/11/politics/stacey-abrams-georgia-senate-2020-meeting/index.html
  47. ^ Bluestein, Greg (May 10, 2017). "Georgia 2018: Columbus mayor won't run for higher office next year". The Atlanta Journal-Constitution. Retrieved May 10, 2017.
  48. ^ Kyle Trygstad (December 8, 2014). "What's Next for Michelle Nunn?". Roll Call. Retrieved December 9, 2014.
  49. ^ "Who will run against Joni Ernst in 2020?". Iowa Starting Line. November 12, 2018. Retrieved November 12, 2018.
  50. ^ [1]
  51. ^ Isenstadt, Alex (15 June 2018). "McConnell zeroes in on election — his own". Politico. Retrieved 30 November 2018.
  52. ^ a b "Prominent Democrats are already threatening to run against Susan Collins". VICE News. Retrieved 2018-10-05.
  53. ^ Villeneuve, Marina; Peoples, Steve; Pace, Julie (October 9, 2018). "Democrats lining up to consider challenging Collins in 2020". Associated Press. Retrieved October 12, 2018.
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