In presidential politics of the United States, a swing state (also, battleground state or purple state[note 1]) is a state in which no single candidate or party has overwhelming support in securing that state's electoral college votes. Such states are targets of both major political parties in presidential elections, since winning these states is the best opportunity for a party to gain electoral votes. Non-swing states are sometimes called safe states, because one candidate has strong enough support that he or she can safely assume that he or she will win the state's votes.
Origin of swing states
In U.S. presidential elections, the Electoral College system allows each state to decide the method by which it awards electors. Since in most states the legislature wants to increase the voting power of the majority, all states except Maine and Nebraska (explained below) use a winner-take-all system where the candidate who wins the most popular votes in a state wins all of that state's electoral votes. As a result, presidential candidates have reduced incentives to spend time or resources in states they are likely to win or lose by a sizable margin.
Since a national campaign is interested in electoral votes, rather than the national popular vote, it tends to ignore states that it believes it will win easily; since it will win these without significant campaigning, any effort put into them is essentially wasted. A similar logic dictates that the campaign avoid putting any effort into states that it knows it will lose.
For example, a Republican candidate (the more conservative of the two major parties) can expect to easily win many of the Southern states like Texas, Mississippi, Alabama, and South Carolina. Similarly, the same candidate can expect to lose most of the traditionally liberal New England states, such as Vermont, Massachusetts, Connecticut, and Rhode Island. Regional exceptions exist; New Hampshire is a swing state in New England, and North Carolina and Florida are swing states in the American South.
In Maine and Nebraska, the apportionment of electoral votes parallels that for Senators and Congressional Representatives. Two electoral votes go to the person who wins a plurality in the state, and a candidate gets one additional electoral vote for each Congressional District in which they receive a plurality. Both of these states have relatively few electoral votes (for the 2004 election, Maine had 4 and Nebraska had 5; the minimum is 3) and are usually not considered swing states (Maine is generally considered a Democratic-leaning state while Nebraska is typically thought to be a Republican state). Despite their different rules, only once has either state split its electoral votes: Nebraska in 2008, giving 4 votes to Republican John McCain and one to Democrat Barack Obama (who swept Maine).
In the 2004 elections, Colorado voted on Amendment 36, an initiative which would have allocated the state's electoral votes in proportion to the popular vote in the state. The initiative would have taken effect immediately, applying to the selection of electors in the same election. However, the initiative failed and Colorado remains under the winner-take-all system that is present in 48 states.
Determining swing states
The Oregon Daily Emerald cited University of Oregon political science professor Joel Bloom as mentioning three factors in identifying a swing state: "examining statewide opinion polls, political party registration numbers and the results of previous elections." The article also cites Leighton Woodhouse, co-director of "Driving Votes," as claiming that there is a general consensus among most groups regarding about 75 percent of the states typically thought of as swing states.
States where the election has a close result become less meaningful in landslide elections. Instead, states which vote similarly to the national vote proportions may be more useful. For example, the closest states in the 1984 presidential election were Minnesota and Massachusetts; however, a campaign strategy centered on them would be unlikely to be meaningful in the electoral college, as even if Democratic candidate Walter Mondale had won Massachusetts, he still would have been crushed. Rather, the "tipping-point state" which gave President Ronald Reagan his decisive vote was Michigan; Reagan won Michigan by 19 percentage points, quite similar to his national margin of 18.2%. Michigan would have been a more relevant state to the election results had the 1984 election come out closer. Similarly, Senator Barack Obama's narrow victory in Indiana in the 2008 election might overstate Indiana's importance as a swing state; Obama lost Indiana in the closer 2012 election, but was still reelected.
In 2012, the states of North Carolina, Florida, Ohio, and Virginia were decided by a margin smaller than 5 percentage points. However, none of these were the "tipping point" state; Mitt Romney could have won all of their 75 Electoral College votes and still lost the election. Rather, Colorado was the tipping point in 2012, as it was in 2008; Colorado voted for Obama by a margin of 5.4%, close to Obama's national margin of 3.9%. If the election had come out closer, Romney's easiest path to victory would likely have involved flipping all of Florida, Ohio, Virginia, and Colorado. Pennsylvania, New Hampshire, and Iowa all had comparable margins to Colorado, and were heavily campaigned in during the 2012 election.
Historical swing states
The swing states of Ohio, Connecticut, Indiana, New Jersey and New York were key to the outcome of the 1888 election, Likewise, Illinois and Texas were key to the outcome of the 1960 election. Florida and New Hampshire were key to the 2000 election. Ohio was the key to the 2004 election. Ohio has gained a reputation as a swing state since the 1980s, and last voted against the person declared president in the 1960 election.
The electoral college encourages political campaigners to focus on these swing states while ignoring the rest of the country. Populous states in which pre-election poll results show no clear favorite are inundated with campaign visits, saturation television advertising, get-out-the-vote efforts by party organizers and debates, while "four out of five" voters in the national election are "absolutely ignored," according to one assessment.
Since most states use a winner-takes-all arrangement in which the candidate with the most votes in that state receives all of the state's electoral votes, there is a clear incentive to focus almost exclusively on only a few key undecided states; in recent elections, these states have included Pennsylvania, Ohio, and Florida in 2004 and 2008, and also Colorado in 2012. In contrast, states with large populations such as California, Texas, and New York, have in recent elections been considered "safe" for a particular party––Democratic for California and New York and Republican for Texas––and therefore campaigns spend less time and money there. Many small states are also considered to be "safe" for one of the two political parties and are also generally ignored by campaigners: of the 13 smallest states, six are reliably Democratic, six are reliably Republican and only New Hampshire is considered as a swing state, according to critic George C. Edwards III. In the 2008 election, campaigns did not mount nationwide efforts but rather focused on select states.
Proponents of the Electoral College claim that adoption of a national popular vote would shift the disproportionate focus to large cities at the expense of rural areas. Candidates might also be inclined to campaign hardest in their base areas to maximize turnout among core supporters, and ignore more closely divided parts of the country. Proponents of a national popular vote for president dismiss such arguments, pointing out that candidates in popular vote elections for governor and U.S. Senate and for statewide allocation of electoral votes do not ignore voters in less populated areas.
- A purple state is referencing the combination of red and blue, in reference to Red states and blue states.
- "Portrait of a swing State", Meghann Cuniff, Oregon Daily Emerald, October 4, 2004.
- Silver, Nate (2012-04-27). "Arizona Is (Probably) Not a Swing State". The New York Times. Retrieved 2013-06-06.
- Silver, Nate (2012-11-08). "As Nation and Parties Change, Republicans Are at an Electoral College Disadvantage". Retrieved 2013-06-06.
- "1888 Overview" p.4, HarpWeek.
- "Daley Remembered as Last of the Big-City Bosses", David Rosenbaum, New York Times, April 21, 2005.
- Trolling the Campuses for Swing-State Votes, Julie Salamon, "The New York Times", October 2, 2004
- Game Theory for Swingers, Jordan Ellenberg, "Slate.com", October 25, 2004
- Katrina vanden Heuvel (November 7, 2012). "It's Time to End the Electoral College". The Nation. Retrieved November 8, 2012. "Electoral college defenders offer a range of arguments, from the openly anti-democratic (direct election equals mob rule), to the nostalgic (we’ve always done it this way), to the opportunistic (your little state will get ignored! More vote-counting means more controversies! The Electoral College protects hurricane victims!). But none of those arguments overcome this one: One person, one vote."
- Edwards III, George C. (2011). Why the Electoral College is Bad for America (Second edition ed.). New Haven and London: Yale University Press. pp. 1, 37, 61, 176–7, 193–4. ISBN 978-0-300-16649-1.
- Hands Off the Electoral College by Rep. Ron Paul, MD, December 28, 2004
- Myths about Big Cities and Big States by National Popular Vote
- The Critical 2012 Swing States
- Battleground States 2008 via the Washington Post
- Swing State Ohio Documentary
- Swing State feature documentary project
- Guide to the 2004 swing states from Slate
- Battleground states from Democracy in Action site hosted by George Washington University
- How close were Presidential Elections? Influential States - Michael Sheppard
- The Bush campaign memo detailing its look at the swing states (PDF file)