Dennis Mersereau | @wxdam
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The 2020 Democratic Presidential Primaries

The 2020 Democratic presidential primary was the largest such race in American history, amassing 29 candidates ranging from former Vice President Joe Biden to spiritual author Marianne Williamson. While most of the candidates dropped out by the Iowa Caucus on February 3, 2020, the field remained large through Super Tuesday.

The heart of the primaries began during incumbent Republican President Donald Trump's first impeachment trial, and voting got underway just as the coronavirus turned into a global pandemic. The pandemic upended all aspects of daily life, including the ongoing presidential election. Many of the state- and party-run primaries were delayed and significantly altered to accommodate absentee voting by mail as a result of the pandemic.

Vermont Sen. Bernie Sanders took an early lead through the first races in Iowa, New Hampshire, and Nevada, but former V.P. Joe Biden's resounding win in South Carolina on February 29 quickly coalesced the field around his candidacy. Most remaining candidates dropped out by Super Tuesday three days later. Sen. Sanders conceded the race to V.P. Biden after the Wisconsin primary on April 7.

Biden picked as his running mate California Sen. Kamala Harris, who also ran in the primary but dropped out before voting began. Biden and Harris went on to defeat Donald Trump and V.P. Mike Pence in the general election on November 3. Trump was the first incumbent president to lose reelection since George H.W. Bush in 1992, and only the tenth president to lose his bid for a second term.

The outgoing president falsely called the election "rigged" in the weeks following the election, embarking on a frenzied effort to overturn the results and remain in power. Trump's attempts to reverse his loss came to a head when he incited a mob of his supporters to violently storm the U.S. Capitol during the certification of the electoral votes on January 6, 2021—going so far as to break into the Senate chamber and trigger an armed standoff at the doors of the House chamber. Just one week before leaving office, he became the first president in history to be impeached twice when the House charged him with incitement of insurrection.



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Maps:   State Results   |   County Winners   |   County Margins   |   County Runners-Up   |   Iowa Breakdown   |   N.H. Breakdown   |   D.C. Breakdown   |   P.R. Breakdown

Data:   Pledged Delegates   |   Delegate Allocation By State/Territory   |   Popular Vote Results By State/Territory


2020 Democratic Primary
State Winner & Margins of Victory
Michael Bloomberg
Joe Biden
Pete Buttigieg
Bernie Sanders

Hover over a state to see the vote breakdown between the two top candidates in each state.
Results in Iowa are based on state delegate equivalents.
Results in Nevada are based on county delegate equivalents.

Base Map: Wikimedia Commons || Last Updated: 8:00 PM EDT August 11, 2020


2020 Democratic Primary
County Winners
Joe Biden
Michael Bloomberg
Pete Buttigieg
Amy Klobuchar
Bernie Sanders
Tom Steyer
Elizabeth Warren
Tie


Click here for a downloadable version of this map. You can use it on social media if you credit me @wxdam.

This map is an SVG file, so it may take a second for your browser to compile the image.

Results in Iowa and Nevada based on delegate equivalents.
Results in Hawaii are based on congressional district.
No geographic results from North Dakota, where voting took place at 14 centralized voting centers.
No geographic results from Alaska, which voted by mail and reported its results statewide.

Base Map: Wikimedia Commons || Last Updated: 8:00 PM EDT August 11, 2020

2020 Democratic Primary
Margins of Victory by County


Joe Biden:
  0.1% to 4.9%  
  5.0% to 9.9%  
  10.0% to 19.9%  
  20.0% to 29.9%  
  ≥30.0%  
  Michael Bloomberg:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Pete Buttigieg:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Amy Klobuchar:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Bernie Sanders:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Tom Steyer:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Elizabeth Warren:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
    Tie    


Click here for a downloadable version of this map. You can use it on social media if you credit me @wxdam.

This map is an SVG file, so it may take a second for your browser to compile the image.

Note: I have to do this map by hand, so it will take me a while to update it after nights with lots of races.

Results in Iowa and Nevada based on delegate equivalents.
Results in Hawaii are based on congressional district.
No geographic results from North Dakota, where voting took place at 14 centralized voting centers.
No geographic results from Alaska, which voted by mail and reported its results statewide.

Base Map: Wikimedia Commons || Last Updated: 8:00 PM EDT August 11, 2020


2020 Democratic Primary
2nd Place Finisher By County

Joe Biden
Bernie Sanders
Michael Bloomberg
No One/Write-In
Elizabeth Warren
Pete Buttigieg
Amy Klobuchar
Tom Steyer
David Rice
Tie For 1st Or 2nd
Tulsi Gabbard
No County Results
Michael Bennet
Andrew Yang



Click here for a downloadable version of this map. You can use it on social media if you credit me @wxdam.

This map is an SVG file, so it may take a second for your browser to compile the image.

Results in Iowa and Nevada based on delegate equivalents.
Results in Hawaii are based on congressional district.
No geographic results from North Dakota, where voting took place at 14 centralized voting centers.
No geographic results from Alaska, which voted by mail and reported its results statewide.

Base Map: Wikimedia Commons || Last Updated: 8:00 PM EDT August 11, 2020

February 3, 2020 Iowa Caucus
Joe Biden
Michael Bloomberg
Pete Buttigieg
Amy Klobuchar
Bernie Sanders
Elizabeth Warren
Tie


Data: Iowa Democratic Party | Base Map: Philosopher/Wikimedia Commons
Last Updated: 8:55 PM February 6, 2020

February 11, 2020 New Hampshire Primary
Joe Biden
Michael Bloomberg
Pete Buttigieg
Amy Klobuchar
Bernie Sanders
Elizabeth Warren
Tie


Townships in white had no polling places.

Data: New York Times
Last Updated: 7:45 PM February 12, 2020

June 2, 2020 Washington D.C. Democratic Primary
Margins of Victory by Precinct


Joe Biden:
  0.1% to 4.9%  
  5.0% to 9.9%  
  10.0% to 19.9%  
  20.0% to 29.9%  
  ≥30.0%  
  Bernie Sanders:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Elizabeth Warren:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
    Tie    


This map is an SVG file, so it may take a second for your browser to compile the image. | Last Updated: 12:30 AM EDT June 11, 2020

July 12, 2020 Puerto Rico Democratic Primary
Margins of Victory by Senate District

Joe Biden:
  0.1% to 4.9%  
  5.0% to 9.9%  
  10.0% to 19.9%  
  20.0% to 29.9%  
  ≥30.0%  
  Michael Bloomberg:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Pete Buttigieg:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Amy Klobuchar:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Bernie Sanders:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%
  Elizabeth Warren:  
0.1% to 4.9%
5.0% to 9.9%
10.0% to 19.9%
20.0% to 29.9%
≥ 30.0%

This map is an SVG file, so it may take a second for your browser to compile the image.
Results reported by senate district. Hover over a district to see the results breakdown.




2020 Democratic Primary
Total Pledged Delegate Count



Last Updated: 2:00 PM EDT September 6, 2020
2020 Democratic Primary
Pledged Delegate Allocation
2020 Democratic Primary
Popular Vote Count

Date State Biden % Bloomberg % Buttigieg % Klobuchar % Sanders % Warren % Others % Total Votes Margin of Victory
Feb 3rd Iowa 23,605 13.7% 16 0.0% 43,209 25.1% 21,100 12.2% 45,652 26.5% 34,909 20.3% 3,825 2.2% 172,316 Buttigieg -2,443 (-1.4%)1
Feb 11th New Hampshire 24,912 8.3% 4,6752 1.6% 72,448 24.3% 58,776 19.7% 76,358 25.6% 27,432 9.2% 33,832 11.3% 298,433 Sanders +3,910 (1.3%)
Feb 22nd Nevada 19,179 18.9% 0 0.0% 17,598 17.3% 7,376 7.3% 41,075 40.5% 11,703 11.5% 4,612 4.5% 101,543 Sanders +23,477 (21.6%)
Feb 29th South Carolina 262,336 48.6% 0 0.0% 44,217 8.2% 16,900 3.1% 106,605 19.8% 38,120 7.1% 71,085 13.2% 539,263 Biden +155,731 (28.9%)
March 3rd Alabama 286,065 63.1% 52,750 11.6% 1,416 0.3% 907 0.2% 74,755 16.5% 25,847 5.7% 11,260 2.5% 453,000 Biden +211,310 (46.6%)
Am. Samoa 31 8.8% 175 49.9% 0 0.0% 0 0.0% 37 10.5% 5 1.4% 103 29.3% 351 Bloomberg +72 (20.5%)
Arkansas 93,012 40.6% 38,312 16.7% 7,649 3.3% 7,009 3.1% 51,413 22.4% 22,971 10.0% 8,756 3.8% 229,122 Biden +41,599 (18.2%)
California 1,613,854 27.9% 701,803 12.1% 249,256 4.3% 126,961 2.2% 2,080,846 36.0% 762,555 13.2% 249,055 4.3% 5,784,330 Sanders +466,992 (8.1%)
Colorado 236,565 24.6% 177,727 18.5% 0 0.0% 0 0.0% 355,293 37.0% 168,695 17.6% 21,848 2.3% 960,128 Sanders +118,728 (12.4%)
Maine 68,729 33.9% 24,294 12.0% 4,364 2.2% 2,826 1.4% 66,826 33.0% 32,055 15.8% 3,426 1.7% 202,520 Biden +1,903 (0.9%)
Massachusetts 473,861 33.5% 166,200 11.8% 38,400 2.7% 17,297 1.2% 376,990 26.7% 303,864 21.5% 37,507 2.7% 1,414,119 Biden +96,871 (6.9%)
Minnesota 287,553 38.6% 61,882 8.3% 7,616 1.0% 41,530 5.6% 222,431 29.9% 114,674 15.4% 8,512 1.1% 744,198 Biden +65,122 (8.8%)
North Carolina 572,271 43.0% 172,558 13.0% 43,632 3.3% 30,742 2.3% 322,645 24.2% 139,912 10.5% 50,622 3.8% 1,332,382 Biden +249,626 (18.7%)
Oklahoma 117,633 38.7% 42,270 13.9% 5,115 1.7% 6,733 2.2% 77,425 25.4% 40,732 13.4% 14,373 4.7% 304,281 Biden +40,208 (13.2%)
Tennessee 215,390 41.7% 79,789 15.5% 17,102 3.3% 10,671 2.1% 129,168 25.0% 53,732 10.4% 10,398 2.0% 516,250 Biden +86,222 (16.7%)
Texas 725,562 34.6% 300,608 14.4% 82,671 3.9% 43,291 2.1% 626,339 29.9% 239,237 11.4% 76,720 3.7% 2,094,428 Biden +99,223 (4.7%)
Utah 40,674 18.4% 33,991 15.4% 18,734 8.5% 7,603 3.4% 79,728 36.1% 35,727 16.2% 4,125 1.9% 220,582 Sanders +39,054 (16.7%)
Vermont 34,669 22.0% 14,828 9.4% 3,709 2.4% 1,991 1.3% 79,921 50.7% 19,785 12.5% 2,749 1.7% 157,652 Sanders +45,252 (28.7%)
Virginia 705,501 53.3% 128,030 9.7% 11,199 0.8% 8,414 0.6% 306,388 23.1% 142,546 10.8% 21,431 1.6% 1,323,509 Biden +399,113 (30.2%)
March 10th Idaho 53,151 48.9% 2,607 2.4% 1,426 1.3% 773 0.7% 46,114 42.4% 2,877 2.6% 1,698 1.6% 108,646 Biden +7,037 (6.5%)
Michigan 840,617 52.9% 73,475 4.6% 22,466 1.4% 11,019 0.7% 577,068 36.3% 26,115 1.6% 37,313 2.3% 1,588,113 Biden +263,549 (16.6%
Mississippi 222,160 81.0% 6,933 2.5% 562 0.2% 440 0.2% 40,657 14.8% 1,550 0.6% 2,089 0.8% 274,391 Biden +181,503 (66.1%)
Missouri 396,826 60.1% 9,754 1.5% 3,272 0.5% 2,652 0.4% 228,244 34.6% 8,066 1.2% 11,269 1.7% 660,083 Biden +168,582 (25.5%
North Dakota 5,742 39.8% 113 0.8% 164 1.1% 223 1.5% 7,682 53.3% 366 2.5% 123 0.9% 14,413 Sanders +1,940 (13.5%)
Washington 591,403 37.9% 122,530 7.9% 63,344 4.1% 33,383 2.1% 570,039 36.6% 142,652 9.2% 35,425 2.3% 1,558,776 Biden +21,364 (1.4%)
March 14th C.N.M.I. 48 36.4% 0 0.0% 0 0.0% 0 0.0% 84 63.6% 0 0.0% 0 0.0% 132 Sanders +36 (27.3%)
March 17th Arizona 268,029 50.0% 0 0.0% 0 0.0% 0 0.0% 200,456 37.4% 35,537 6.6% 7,619 1.4% 536,509 Biden +67,573 (12.6%)
Florida 1,077,375 61.9% 146,544 8.4% 39,886 2.3% 17,276 1.0% 397,311 22.8% 32,875 1.9% 27,947 1.6% 1,739,214 Biden +680,064 (39.1%)
Illinois 986,661 58.9% 25,500 1.5% 9,729 0.6% 0 0.0% 605,701 36.2% 24,413 1.5% 22,129 1.3% 1,674,133 Biden +380,960 (22.8%)
March 23rd Dems Abroad 9,059 22.7% 892 2.2% 616 1.5% 224 0.6% 23,139 57.9% 2,730 6.8% 3,324 8.3% 39,984 Sanders +14,080 (35.2%)
April 7th Wisconsin 581,463 63.0% 8,846 1.0% 4,946 0.5% 6,079 0.7% 293,441 31.8% 14,060 1.5% 14,655 1.6% 923,490 Biden +288,022 (31.2%)
April 11th Alaska 10,834 55.3% 0 0.0% 0 0.0% 0 0.0% 8,755 44.7% 0 0.0% 0 0.0% 19,589 Biden +2,079 (10.6%)
April 17th Wyoming 10,912 72.2% 0 0.0% 0 0.0% 0 0.0% 4,206 27.8% 0 0.0% 0 0.0% 15,118 Biden +6,706 (44.4%)
April 28th Ohio 647,284 72.4% 28,704 3.2% 15,113 1.7% 11,899 1.3% 149,683 16.7% 30,985 3.5% 10,715 1.2% 894,383 Biden +497,601 (55.6%)
May 2nd Kansas 110,041 76.9% 0 0.0% 0 0.0% 0 0.0% 33,142 23.1% 0 0.0% 0 0.0% 143,183 Biden +76,899 (53.7%)
May 12th Nebraska 126,444 76.8% 0 0.0% 0 0.0% 0 0.0% 23,214 14.1% 10,401 6.3% 4,523 2.7% 164,582 Biden +103,230 (62.7%)
May 19th Oregon 408,315 66.0% 0 0.0% 0 0.0% 0 0.0% 127,345 20.6% 59,355 9.6% 23,696 3.8% 618,711 Biden +280,970 (45.7%)
May 23rd Hawaii 21,215 63.2% 0 0.0% 0 0.0% 0 0.0% 12,337 36.8% 0 0.0% 0 0.0% 33,552 Biden +8,878 (26.5%)
June 2nd Indiana 380,836 76.5% 4,783 1.0% 17,957 3.6% 3,860 0.8% 67,688 13.6% 14,344 2.9% 8,459 1.7% 497,297 Biden +313,148 (62.9%)
Maryland 879,753 83.7% 6,773 0.6% 7,180 0.7% 5,685 0.5% 81,939 7.8% 27,134 2.6% 42,309 4.0% 1,050,773 Biden +797,814 (75.9%)
Montana 111,706 76.0% 0 0.0% 0 0.0% 0 0.0% 22,033 15.0% 11,984 8.2% 1,250 0.9% 146,973 Biden +89,673 (61.0%)
New Mexico 181,700 73.3% 0 0.0% 0 0.0% 0 0.0% 37,435 15.1% 14,552 5.9% 14,193 5.7% 247,880 Biden +144,265 (58.2%)
Pennsylvania 1,264,624 76.7% 0 0.0% 0 0.0% 0 0.0% 287,834 18.0% 0 0.0% 43,050 2.7% 1,595,508 Biden +976,790 (61.2%)
Rhode Island 79,728 76.7% 0 0.0% 0 0.0% 0 0.0% 15,525 14.9% 4,479 4.3% 4,250 4.1% 103,982 Biden +64,203 (61.7%)
South Dakota 40,800 77.5% 0 0.0% 0 0.0% 0 0.0% 11,861 22.5% 0 0.0% 0 0.0% 52,661 Biden +28,939 (55.0%)
Washington DC 84,093 76.0% 0 0.0% 0 0.0% 0 0.0% 11,116 10.0% 14,228 12.9% 1,251 1.1% 110,688 Biden +72,977 (65.9%)
June 6th Guam 270 69.6% 0 0.0% 0 0.0% 0 0.0% 118 30.4% 0 0.0% 0 0.0% 388 Biden +152 (39.2%)
U.S.V.I. 502 91.3% 0 0.0% 0 0.0% 0 0.0% 28 5.1% 0 0.0% 0 0.0% 550 Biden +474 (86.2%)
June 9th Georgia 922,177 84.9% 7,657 0.7% 6,346 0.6% 4,317 0.4% 101,668 9.4% 21,906 2.0% 22,658 2.1% 1,086,729 Biden +820,509 (75.5%)
West Virginia 122,518 65.3% 3,759 2.0% 3,455 1.8% 3,011 1.6% 22,793 12.2% 5,741 3.1% 26,205 14.0% 187,482 Biden +99,725 (53.2%)
June 23rd Kentucky 365,284 67.9% 0 0.0% 9,127 1.7% 5,296 1.0% 65,055 12.1% 15,300 2.8% 77,843 14.5% 537,905 Biden +300,229 (55.8%)
New York 1,120,209 70.2% 39,292 2.5% 22,515 1.4% 10,872 0.7% 281,529 17.6% 81,535 5.1% 39,576 2.5% 1,595,528 Biden +673,357 (70.3%)
July 7th Delaware 81,954 89.4% 0 0.0% 0 0.0% 0 0.0% 6,878 7.5% 2,850 3.1% 0 0.0% 91,682 Biden +75,076 (81.9%)
New Jersey 813,693 84.9% 0 0.0% 0 0.0% 0 0.% 140,336 14.6% 0 0.0% 4,158 0.4% 958,187 Biden +673,357 (72.1%)
July 11th Louisiana 212,555 79.5% 4,312 1.6% 2,363 0.9% 2,431 0.9% 19,859 7.4% 6,426 2.4% 19,340 7.2% 267,286 Biden +192,696 (72.1%)
July 12th Puerto Rico 3,930 62.4% 894 14.2% 158 2.5% 31 0.5% 932 14.8% 101 1.6% 256 4.1% 6,302 Biden +2,998 (47.6%)
August 11th Connecticut3 224,500 84.9% 0 0.0% 0 0.0% 0 0.0% 30,512 1.3% 0 0.0% 9,404 3.6% 264,416 Biden +193,988 (73.4%)
TOTALS 19,059,813 52.0% 2,493,276 6.8% 923,828 2.5% 529,598 1.4% 9,673,652 26.4% 2,827,103 7.7% 1,150,986 3.1% 36,658,256 Biden +9,386,161 (25.6%)
Biden % Bloomberg % Buttigieg % Klobuchar % Sanders % Warren % Others % Total Votes Margin of Victory

Iowa and Nevada vote totals based on final alignment.

1 Bernie Sanders won the most votes in Iowa, but Buttigieg won the most state delegate equivalents, so Buttigieg is considered the winner of the Iowa Caucus.
2 Michael Bloomberg won 4,675 write-in votes in the New Hampshire Democratic primary, per the NH SoS.



Last Updated: 2:00 PM EDT September 6, 2020
Data Sources: State Democratic Parties and Secretaries of State
Note: The State of New York didn't publish certified results for the Democratic presidential primary there. Vote totals from the New York Times.

Image Sources: Base SVG maps from Wikimedia Commons.
Data Sources: County-by-county election results via the AP/New York Times. Iowa results from the New York Times and the Iowa Democratic Party.

I didn't stick to the weather.