Presidential battleground states, 2020

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2020 Presidential Election
Date: November 3, 2020

Presidential candidates
Republican Party Donald Trump
Democratic Party Joe Biden
Green Party
Howie Hawkins
Libertarian Party Jo Jorgensen

Overviews
Candidates on the issues • Battleground states • Electoral CollegePivot Counties

Debates
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Primaries
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Battleground states are states that have split support for Democratic and Republican candidates in recent presidential election cycles. Sometimes referred to as swing states or purple states, they are critical to a candidate's campaign strategy since the majority of states consistently vote for the same presidential party and are not competitive.

Using the average of race ratings from the Cook Political Report, Inside Elections, and Sabato's Crystal Ball, Ballotpedia identified 13 battleground states. These are the states on which an electoral victory hinged:

President Donald Trump (R) won five of these battleground states: Florida, Iowa, North Carolina, Ohio, and Texas. Former Vice President Joe Biden (D) won the other eight: Arizona, Georgia, Michigan, Minnesota, Nevada, New Hampshire, Pennsylvania, and Wisconsin.

Heading into the 2016 presidential election, for example, 40 states—representing 421 electoral votes[1]—had voted for the same political party in the previous four election cycles. While President Donald Trump's (R) victory broke this streak in several midwestern states in 2016, much of the Electoral College in the 2020 presidential election is already set.[2]

This page includes the following information about battleground states:

Contents

Presidential election results

See also: Electoral College in the 2020 presidential election

Lawsuits related to the 2020 presidential election

See also: Ballotpedia's 2020 Election Help Desk: Presidential election results subject to lawsuits and recounts

The following is a list of post-election lawsuits involving the presidential election. Where available, case names and numbers, states of origin, courts of origin, and links to complaints and docket reports are provided.

2020 presidential race ratings

The following map reflects the average presidential race rating for each state as forecast by the Cook Political Report, Inside Elections, and Sabato's Crystal Ball.

Latest updates

Sabato's Crystal Ball also updated its race ratings on November 2, 2020:[3]

  • Florida, Iowa, Maine's 2nd Congressional District, and Ohio moved from Toss Up to Leans Republican.
  • Georgia and North Carolina moved from Toss Up to Leans Democratic.

Inside Elections updated its race ratings on October 28, 2020:[4]

  • Texas moved from Tilt Republican to Toss Up.
  • Georgia and North Carolina moved from Toss Up to Tilt Democratic.

The Cook Political Report updated its race ratings on October 28, 2020:[5]

  • Texas moved from Leans Republican to Toss Up.

Battleground states

This section contains polls and election results for each of the battleground states. Click on the state's name for more information.

Pivot Counties in the 2020 presidential election

See also: Election results, 2020: Pivot Counties in the 2020 presidential election

Pivot Counties are the 206 counties nationwide Ballotpedia identified as having voted for Barack Obama (D) in 2008 and 2012 and Donald Trump (R) in 2016. Media and political observers sometimes refer to these counties as swing counties.

Ballotpedia defines Pivot Counties Trump won in 2020 as Retained Pivot Counties and those Joe Biden (D) won as Boomerang Pivot Counties.

As of Dec. 11, there were:

  • 181 Retained Pivot Counties across 32 states: Trump won these counties with a median margin of victory of 13.2 percentage points.
  • 25 Boomerang Pivot Counties across 16 states: Biden won these counties with a median margin of victory of 3.4 percentage points.

Click "Show More" to view the list of all 206 Pivot Counties, the winner of those counties following the 2020 election, and margins of victory from 2008 to 2020.

Show more
Analysis of counties won by Trump in 2016 and Obama in 2012 and 2008 following the 2020 presidential election[18]
County State Winner, 2020 Margin of Victory, 2020 Trump Margin of Victory, 2016 Obama Margin of Victory, 2012 Obama Margin of Victory, 2008
Woodruff County Arkansas Trump +27.75 +8.91 +4.21 +7.46
Conejos County Colorado Trump +7.55 +3.56 +9.22 +12.93
Huerfano County Colorado Trump +2.88 +6.61 +8.27 +11.23
Las Animas County Colorado Trump +9.89 +15.6 +2.65 +7.04
Pueblo County Colorado Biden +1.72 +0.5 +13.99 +14.97
Windham County Connecticut Trump +4.27 +7.78 +13.28 +14.68
Kent County Delaware Biden +4.07 +4.87 +4.94 +9.81
Jefferson County Florida Trump +6.87 +5.06 +1.75 +3.66
Monroe County Florida Trump +7.92 +6.82 +0.44 +4.9
Pinellas County Florida Biden +0.22 +1.11 +5.65 +8.25
St. Lucie County Florida Trump +1.56 +2.4 +7.86 +12.12
Baker County Georgia Trump +15.76 +8.68 +0.57 +1.07
Dooly County Georgia Trump +6.04 +2.05 +6.98 +3.53
Peach County Georgia Trump +4.65 +2.91 +7.48 +6.75
Quitman County Georgia Trump +9.67 +10.92 +9.04 +7.9
Twiggs County Georgia Trump +7.34 +1.58 +8.64 +6.97
Alexander County Illinois Trump +14.21 +8.3 +13.65 +12.62
Carroll County Illinois Trump +29.37 +26.69 +1.49 +4.81
Fulton County Illinois Trump +20.11 +14.93 +11.04 +21.33
Henderson County Illinois Trump +33.1 +28.43 +12.25 +17.67
Henry County Illinois Trump +21.47 +20.99 +3.08 +7.74
Jo Daviess County Illinois Trump +16.46 +14.64 +1.16 +10.49
Knox County Illinois Trump +5.64 +2.91 +17.37 +19.89
Mercer County Illinois Trump +23.98 +20.36 +7.39 +11.91
Putnam County Illinois Trump +19.32 +19.92 +1.82 +15.64
Warren County Illinois Trump +20.02 +16.5 +5.47 +8.08
Whiteside County Illinois Trump +8.31 +6.18 +17.02 +17.56
Delaware County Indiana Trump +13.18 +13.43 +3.12 +14.98
LaPorte County Indiana Trump +7.23 +6.33 +12.57 +22.04
Perry County Indiana Trump +24.56 +18.55 +11.59 +22.84
Porter County Indiana Trump +6.08 +6.59 +3.9 +7.2
Vigo County Indiana Trump +14.73 +14.97 +0.86 +15.83
Allamakee County Iowa Trump +29.09 +24.15 +4.17 +14.25
Boone County Iowa Trump +15.59 +13.69 +6.64 +7.63
Bremer County Iowa Trump +16.06 +13.68 +2.68 +9.31
Buchanan County Iowa Trump +20.89 +15.02 +13.87 +18.48
Cedar County Iowa Trump +17.04 +17.78 +4.59 +9.64
Cerro Gordo County Iowa Trump +6.31 +7.66 +13.38 +20.83
Chickasaw County Iowa Trump +31.29 +22.94 +11.07 +20.74
Clarke County Iowa Trump +35.93 +28.02 +1.47 +2.25
Clayton County Iowa Trump +28.83 +22.78 +7.03 +17.17
Clinton County Iowa Trump +10.33 +5.12 +22.84 +23.03
Des Moines County Iowa Trump +8.51 +6.89 +18.41 +23.04
Dubuque County Iowa Trump +2.89 +1.23 +14.71 +20.77
Fayette County Iowa Trump +22.68 +19.36 +11.96 +16.6
Floyd County Iowa Trump +19.42 +14.84 +14.63 +21.88
Howard County Iowa Trump +27.33 +20.49 +20.95 +25.78
Jackson County Iowa Trump +26.14 +19.27 +16.89 +24.39
Jasper County Iowa Trump +21.54 +18.13 +7.07 +7.5
Jefferson County Iowa Trump +1.38 +0.47 +15.97 +20.23
Jones County Iowa Trump +21.47 +19.08 +7.78 +10.4
Lee County Iowa Trump +19.31 +16.02 +15.49 +16.01
Louisa County Iowa Trump +33.27 +28.37 +0.64 +4.25
Marshall County Iowa Trump +7.69 +8.31 +9.36 +9.35
Mitchell County Iowa Trump +27.89 +24.04 +3.37 +12.31
Muscatine County Iowa Trump +7.02 +6.26 +15.88 +15.64
Poweshiek County Iowa Trump +13.32 +6.53 +9.35 +11.75
Tama County Iowa Trump +19.08 +20.28 +7.43 +12.19
Union County Iowa Trump +31.51 +27.49 +3.86 +3.7
Wapello County Iowa Trump +23.64 +20.6 +11.88 +13.53
Webster County Iowa Trump +24.27 +21.52 +5.84 +8.51
Winneshiek County Iowa Trump +5.12 +0.79 +14.74 +22.65
Worth County Iowa Trump +25.85 +21.68 +14.53 +22.42
Elliott County Kentucky Trump +51.22 +44.13 +2.5 +25.17
Androscoggin County Maine Trump +2.81 +9.38 +12.78 +15.22
Aroostook County Maine Trump +19.93 +17.19 +7.62 +9.58
Franklin County Maine Trump +3.94 +5.47 +18.41 +20.29
Kennebec County Maine Biden +0.25 +3.58 +13.46 +14.78
Oxford County Maine Trump +8.79 +12.94 +14.73 +16.04
Penobscot County Maine Trump +8.34 +10.91 +2.93 +5.12
Somerset County Maine Trump +23.37 +22.67 +1.68 +5.7
Washington County Maine Trump +19.78 +18.44 +1.6 +1.01
Bay County Michigan Trump +11.57 +12.55 +5.56 +15.31
Calhoun County Michigan Trump +11.08 +12.46 +1.6 +9.36
Eaton County Michigan Trump +0.78 +4.72 +3.13 +8.4
Gogebic County Michigan Trump +12.45 +14.8 +8.1 +17.27
Isabella County Michigan Trump +2.52 +3.66 +9.28 +19.26
Lake County Michigan Trump +26.18 +22.77 +5.01 +12.28
Macomb County Michigan Trump +8.07 +11.53 +3.99 +8.62
Manistee County Michigan Trump +15.11 +15.29 +5.93 +13.26
Monroe County Michigan Trump +22.61 +21.97 +0.98 +4.35
Saginaw County Michigan Biden +0.29 +1.13 +11.89 +17.34
Shiawassee County Michigan Trump +19.85 +19.59 +3.67 +8.59
Van Buren County Michigan Trump +12.23 +13.92 +0.45 +8.78
Beltrami County Minnesota Trump +3.15 +9.72 +9.89 +10.15
Blue Earth County Minnesota Biden +4.44 +3.69 +9.48 +12.95
Chippewa County Minnesota Trump +30.62 +28.7 +1.87 +5.87
Clay County Minnesota Biden +4.08 +1.95 +7.92 +16.02
Fillmore County Minnesota Trump +22.65 +21.7 +7.34 +8.26
Freeborn County Minnesota Trump +15.99 +17.24 +14.11 +17.13
Houston County Minnesota Trump +12.95 +13.87 +3.16 +10.69
Itasca County Minnesota Trump +16.76 +16.35 +9.83 +12.92
Kittson County Minnesota Trump +20.46 +22.05 +6.03 +18.54
Koochiching County Minnesota Trump +21.27 +19.85 +9.45 +10.1
Lac qui Parle County Minnesota Trump +26.81 +25.6 +0.9 +5.92
Mahnomen County Minnesota Trump +1.3 +2.92 +18.56 +25.31
Mower County Minnesota Trump +5.82 +7.82 +22.61 +23.61
Nicollet County Minnesota Biden +3.16 +3.04 +7.83 +10.52
Norman County Minnesota Trump +15.98 +13.34 +10.79 +26.94
Rice County Minnesota Trump +0.17 +3.06 +8.27 +11.5
Swift County Minnesota Trump +29.5 +25.57 +9.83 +13.79
Traverse County Minnesota Trump +27.41 +23.3 +4.44 +5.41
Winona County Minnesota Biden +0.39 +2.9 +12.85 +19.09
Chickasaw County Mississippi Trump +4.48 +6.06 +4.52 +2.13
Panola County Mississippi Trump +4.2 +0.12 +8.62 +6.52
Blaine County Montana Biden +3.85 +2.46 +15.32 +19.24
Hill County Montana Trump +13.59 +17.18 +3.5 +12.21
Roosevelt County Montana Trump +2.14 +6.49 +15.58 +26.27
Thurston County Nebraska Trump +2.44 +5.94 +13.91 +6.96
Coos County New Hampshire Trump +5.91 +8.89 +17.54 +18.19
Hillsborough County New Hampshire Biden +7.65 +0.2 +1.12 +3.73
Sullivan County New Hampshire Biden +3.61 +2.58 +13.27 +17.93
Gloucester County New Jersey Biden +1.94 +0.48 +10.77 +12.16
Salem County New Jersey Trump +12.77 +15 +1.31 +3.92
Colfax County New Mexico Trump +10.97 +8.55 +2.24 +10.73
Hidalgo County New Mexico Trump +15.05 +6.73 +4.96 +2.92
Valencia County New Mexico Trump +9.61 +8.6 +2.47 +7.72
Broome County New York Biden +3.45 +2.01 +5.31 +8.02
Cayuga County New York Trump +9.22 +11.64 +11.4 +8.48
Cortland County New York Trump +1.93 +5.58 +9.11 +9.96
Essex County New York Biden +5.03 +1.14 +18.77 +13.32
Franklin County New York Trump +2.15 +5.45 +26.07 +22.23
Madison County New York Trump +10.55 +14.2 +0.89 +0.87
Niagara County New York Trump +9.64 +17.75 +0.84 +1
Orange County New York Trump +0.18 +5.5 +5.65 +4.13
Oswego County New York Trump +20.13 +21.99 +7.93 +2.44
Otsego County New York Trump +5.01 +11.13 +2.72 +5.91
Rensselaer County New York Biden +5.63 +1.41 +12.19 +9.34
St. Lawrence County New York Trump +11.68 +8.82 +16.71 +16.33
Saratoga County New York Biden +5.39 +3.21 +2.44 +3.4
Seneca County New York Trump +9.05 +11.01 +9.08 +2.6
Suffolk County New York Trump +0.03 +6.84 +3.69 +5.99
Sullivan County New York Trump +9.15 +11.23 +9.02 +9.46
Warren County New York Trump +0.16 +8.47 +2.32 +2.64
Washington County New York Trump +15.55 +18.4 +1.9 +0.81
Bladen County North Carolina Trump +13.72 +9.39 +1.97 +2.07
Gates County North Carolina Trump +13.75 +9.07 +4.11 +5.22
Granville County North Carolina Trump +6.59 +2.49 +4.54 +6.58
Martin County North Carolina Trump +4.95 +0.43 +4.65 +4.64
Richmond County North Carolina Trump +14.81 +9.74 +2.95 +1.5
Robeson County North Carolina Trump +18.62 +4.27 +17.41 +13.78
Benson County North Dakota Trump +13.87 +4.33 +17.01 +33.53
Ransom County North Dakota Trump +19.27 +15.77 +13.77 +15.33
Sargent County North Dakota Trump +25.51 +19.73 +9.77 +17.49
Steele County North Dakota Trump +23.9 +17.72 +1.92 +20.35
Ashtabula County Ohio Trump +23.49 +18.8 +12.78 +13.54
Erie County Ohio Trump +11.55 +9.48 +12.29 +13.86
Montgomery County Ohio Biden +2.24 +0.73 +4.62 +6.22
Ottawa County Ohio Trump +23.37 +19.51 +4.3 +6.24
Portage County Ohio Trump +12.44 +9.87 +5.52 +8.99
Sandusky County Ohio Trump +27.55 +22.58 +2.71 +4.64
Stark County Ohio Trump +18.51 +17.17 +0.47 +5.46
Trumbull County Ohio Trump +10.55 +6.22 +23 +22.43
Wood County Ohio Trump +7.6 +7.99 +4.84 +7.13
Columbia County Oregon Trump +10.29 +11.46 +5.16 +12.02
Tillamook County Oregon Trump +1.71 +5.58 +4.86 +9.89
Erie County Pennsylvania Biden +1.03 +1.56 +16.03 +19.88
Luzerne County Pennsylvania Trump +14.36 +19.31 +4.81 +8.41
Northampton County Pennsylvania Biden +0.72 +3.78 +4.71 +12.3
Kent County Rhode Island Biden +7.64 +0.67 +17.74 +17.4
Barnwell County South Carolina Trump +7.48 +5.16 +5.33 +1.65
Calhoun County South Carolina Trump +4.82 +2.83 +4.31 +3.55
Chester County South Carolina Trump +10.91 +4.83 +10.58 +8.3
Colleton County South Carolina Trump +9.53 +8.49 +0.19 +0.53
McCormick County South Carolina Trump +4.76 +3.32 +3.6 +6.08
Corson County South Dakota Trump +1.95 +4.51 +11.08 +21.48
Day County South Dakota Trump +27.56 +23.77 +6.16 +12.89
Marshall County South Dakota Trump +19.7 +15.51 +8.66 +16.48
Roberts County South Dakota Trump +13.37 +15.53 +9.84 +19.64
Ziebach County South Dakota Biden +8.5 +1.96 +16.43 +27.16
Hardeman County Tennessee Trump +15.7 +7.92 +5.91 +6.18
Jefferson County Texas Trump +1.58 +0.48 +1.61 +2.25
Essex County Vermont Trump +11.19 +16.65 +13.4 +14.48
Buckingham County Virginia Trump +13.2 +11.28 +2.43 +0.87
Caroline County Virginia Trump +4.17 +5.02 +8.24 +11.97
Essex County Virginia Trump +0.6 +2.14 +7.3 +10.35
Nelson County Virginia Trump +5.21 +5.59 +2.72 +9.15
Westmoreland County Virginia Trump +8.23 +7.14 +6.95 +10.24
Clallam County Washington Biden +3.37 +2.76 +0.38 +3.3
Cowlitz County Washington Trump +17.4 +13.32 +4.44 +11.15
Grays Harbor County Washington Trump +6.56 +6.99 +14.11 +14.56
Mason County Washington Trump +3.86 +5.81 +7.09 +8.66
Pacific County Washington Trump +1.13 +6.74 +11.52 +14.07
Adams County Wisconsin Trump +25.66 +21.92 +8.73 +18.35
Buffalo County Wisconsin Trump +25.26 +21.82 +2.93 +14.66
Columbia County Wisconsin Trump +1.53 +2.14 +13.58 +15.26
Crawford County Wisconsin Trump +7.67 +5.4 +19.98 +27.03
Door County Wisconsin Biden +1.45 +3.22 +6.99 +17.33
Dunn County Wisconsin Trump +13.93 +11.09 +4.97 +14.95
Forest County Wisconsin Trump +30.95 +26.58 +5.44 +15.16
Grant County Wisconsin Trump +12.28 +9.43 +13.77 +23.88
Jackson County Wisconsin Trump +15.07 +11.74 +15.01 +21.84
Juneau County Wisconsin Trump +29.2 +26.05 +7.03 +9
Kenosha County Wisconsin Trump +3.13 +0.31 +12.23 +18.06
Lafayette County Wisconsin Trump +13.72 +8.99 +15.37 +22.32
Lincoln County Wisconsin Trump +22.77 +20.6 +0.71 +12.48
Marquette County Wisconsin Trump +27.36 +24.09 +0.27 +5.28
Pepin County Wisconsin Trump +26.42 +23.08 +2.22 +12.89
Price County Wisconsin Trump +27.64 +25 +0.04 +13.4
Racine County Wisconsin Trump +4.06 +4.28 +3.54 +7.41
Richland County Wisconsin Trump +9.72 +5.5 +16.13 +20.63
Sauk County Wisconsin Biden +1.7 +0.35 +18.47 +23.04
Sawyer County Wisconsin Trump +13.43 +18.41 +0.49 +6.23
Trempealeau County Wisconsin Trump +16.57 +12.64 +14.08 +26.39
Vernon County Wisconsin Trump +4.78 +4.43 +14.73 +22
Winnebago County Wisconsin Trump +3.97 +7.34 +3.73 +11.66
Average +11.45 +8.22 +12.29
Median +9.41 +7.32 +11.94

Last updated Dec. 11, 9:30 a.m. ET


PredictIt markets

See also: PredictIt markets in the 2020 presidential election

What is a PredictIt market?

PredictIt is an online political futures market in which users purchase shares relating to the outcome of political events using real money. Each event, such as an election, has a number of contracts associated with it, each correlating to a different outcome. For instance, an election contested between four candidates would be represented by eight separate contracts, with each contract correlating to a particular candidate winning or losing the election.

The price of a share in each individual contract rises and falls based on market demand. Once the event's outcome is decided, holders of shares that correlate with the correct outcome receive a $1 payout for each share they held.

For example, a user buys 10 shares at 20 cents each in a presidential primary saying Candidate A will win. If Candidate A wins the election, the user earns $10. If the candidate loses, the user earns no money and loses his original $2 investment.

Why do PredictIt markets matter?

Services such as PredictIt are being used to gain insight into the likely outcome of elections. Microsoft Research economist David Rothschild argues that they are better suited to the task than polls: "I can create a poll that can mimic everything about a prediction market...except markets have a way of incentivizing you to come back at 2 a.m. and update your answer."[19][20][21]

Battleground states

Arizona

Florida

Georgia

Iowa

Michigan

Minnesota

Nevada

New Hampshire

North Carolina

Ohio

Pennsylvania

Texas

Wisconsin


Performance of third-party candidates, 2000-2016

The following two charts show the vote share of candidates running as Libertarian or Green Party candidates in presidential battlegrounds between 2000 and 2016.[22]

Vote share for Libertarian Party presidential candidate by battleground state, 2000-2016
State 2016 2012 2008 2004 2000
Arizona 4.1% 1.4% 0.5% 0.6% 0.4%
Florida 2.2% 0.5% 0.2% 0.2% 0.2%
Georgia 3.0% 1.2% 0.7% 0.6% 1.4%
Iowa 3.8% 0.8% 0.3% 0.2% 0.2%
Michigan 3.6% N/A 0.5% 0.2% 0.4%
Minnesota 3.8% 1.2% 0.3% 0.2% 0.2%
Nevada 3.3% 1.0% 0.4% 0.4% 0.5%
New Hampshire 4.1% 1.2% 0.3% N/A 0.5%
North Carolina 2.7% 1.0% 0.6% 0.3% 0.4%
Ohio 3.2% 0.9% 0.4% N/A 0.3%
Pennsylvania 2.4% 0.9% 0.3% 0.4% 0.2%
Texas 3.2% 1.1% 0.7% 0.5% 0.4%
Wisconsin 3.6% 0.7% 0.3% 0.2% 0.3%


Vote share for Green Party presidential candidate by battleground state, 2000-2016
State 2016 2012 2008 2004 2000
Arizona 1.3% 0.3% 0.2% N/A 3.0%
Florida 0.7% 0.1% 0.0% 0.1% 1.6%
Georgia N/A N/A N/A N/A N/A
Iowa 0.7% 0.2% 0.1% 0.1% 2.2%
Michigan 1.1% 0.5% 0.2% 0.1% 2.0%
Minnesota 1.3% 0.4% 0.2% 0.2% 5.2%
Nevada N/A N/A 0.2% 0.1% 2.5%
New Hampshire 0.9% N/A N/A N/A 3.9%
North Carolina N/A N/A N/A N/A N/A
Ohio 0.8% 0.3% 0.2% N/A N/A
Pennsylvania 0.8% 0.4% N/A 0.1% 2.1%
Texas 0.8% 0.3% N/A N/A 2.2%
Wisconsin 1.0% 0.3% 0.1% 0.1% 3.6%

Early voting

See also: Early voting dates, 2020

The following table comprises three columns with information about early voting in each state.

Each of the table's three columns can be sorted alphabetically or chronologically. To sort a column, click the column heading. To search for a state, enter the state name in the search bar above the upper right-hand corner of the table.

By default, the table displays 10 states at a time. To see additional states on subsequent pages, use the navigation prompts under the bottom right-hand corner of the table. To change the number of states displayed on a single page, use the drop-down menu above the upper left-hand corner of the table.


See also

Footnotes

  1. This tally includes one congressional district in Nebraska with the same consistent record
  2. 270 to Win, "Electoral Map: Blue or Red States Since 2000," accessed July 15, 2020
  3. Sabato's Crystall Ball, "2020 Rating Changes," accessed November 2, 2020
  4. Inside Elections, "Presidential Ratings," October 28, 2020
  5. Cook Political Report, "Biden’s Path to 270 Widens, Trump’s Path Narrows, as Texas Moves to Toss Up," October 28, 2020
  6. U.S. Election Atlas, "2012 Presidential Election Results," accessed December 29, 2014
  7. U.S. Election Atlas, "2008 Presidential Election Results," accessed December 29, 2014
  8. U.S. Election Atlas, "2012 Presidential Election Results," accessed December 29, 2014
  9. U.S. Election Atlas, "2008 Presidential Election Results," accessed December 29, 2014
  10. U.S. Election Atlas, "2012 Presidential Election Results," accessed December 29, 2014
  11. U.S. Election Atlas, "2008 Presidential Election Results," accessed December 29, 2014
  12. U.S. Election Atlas, "2012 Presidential Election Results," accessed December 29, 2014
  13. U.S. Election Atlas, "2008 Presidential Election Results," accessed December 29, 2014
  14. U.S. Election Atlas, "2012 Presidential Election Results," accessed December 29, 2014
  15. U.S. Election Atlas, "2008 Presidential Election Results," accessed December 29, 2014
  16. U.S. Election Atlas, "2012 Presidential Election Results," accessed December 29, 2014
  17. U.S. Election Atlas, "2008 Presidential Election Results," accessed December 29, 2014
  18. This analysis does not include counties in Alaska and certain independent cities due to variations in vote total reporting.
  19. Nature, "The power of prediction markets," October 18, 2016
  20. Politico, "Meet the 'stock market' for politics," October 31, 2014
  21. U.S. Presidential General Election Results, "2008 Electoral Map Based on the Intrade Prediction Market," accessed January 25, 2018
  22. Dave Leip's Atlas of Presidential Elections, "Election Results," accessed October 2, 2020