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As of July 2021, 31 states (plus the District of Columbia and the U.S. Virgin Islands) immune voters to indicate their partisan affiliations on voter registration forms and reported total registration numbers publicly. The remaining 19 states either did not ask voters to signal partisan affiliation on their registration forms or did not publicly study those totals, co-ordinate to analysis washed by Ballotpedia.

This article provides details virtually the number of registered voters by partisan affiliations in those states that allow voters to register past party and written report those totals publicly. Historical data dating back to 2000 was provided to Ballotpedia by Richard Winger, the editor and publisher of Ballot Access News.

HIGHLIGHTS

  • Every bit of July 2021, 49.three million registered voters identified themselves as Democrats. At 39.6%, Democrats represented the single largest share of registered voters in those states that allow voters to bespeak partisan affiliation on their registration forms. A total of 36.4 one thousand thousand registered voters identified themselves as Republicans, representing 29.2% of registered voters in these states.
  • Approximately 38.8 million registered voters identified themselves as independents or members of third-parties. This amounted to 31.ii% of registered voters in these states.
  • In the 2020 presidential election, Joe Biden (D) received a combined 53.5% of the vote to Donald Trump'due south (R) 44.vii% across these states. Both candidates received a larger per centum of votes than the percentage of their respective political party's registered voters. Independent and third-party voters made upward 31.two% of all registered voters in these states, while independent and third-political party presidential candidates received i.9% of the vote.
  • In those states that prompt voters to indicate partisan affiliation on registration forms, affiliation with a political party may be a condition of participation in that party'due south primaries. To learn more about primary participation criteria, click here.
  • Voter registration figures, 2021

    The map beneath shows the 31 states that displayed voter registration figures publicly as of July 2021. In 22 states, no unmarried grouping of voters fabricated up a bulk of registrants: in 10 states, Democrats made up a plurality of registered voters and Republicans made upwardly a plurality in 4. Voters registered as independent or with a third political party made up a plurality of registrants in eight states. Democrats made up a majority of registered voters in ii states—Maryland and New York—and Republicans made up a majority in four—Idaho, Oklahoma, Utah, and Wyoming. Independent or tertiary party registrants made up a majority in three states—Alaska, Arkansas, and Massachusetts.

    The table beneath shows voter registration figures in the 31 states that let voters to betoken partisan affiliation on their voter registration forms.

    Voter registration figures by partisan affiliation, as of June 2021[one]
    State Democratic Republican Independent/
    nonpartisan
    American Independent Constitution Dark-green Libertarian Working Families Other[2]
    Alaska [3] 81,255 149,173 338,931 - 646 1,524 six,948 - 21,127
    Arizona [four] i,489,356 1,603,522 - - - - 42,220 - ane,566,514
    Arkansas [5] ninety,420 117,277 1,556,117 - - 94 687 - one
    California [6] x,288,144 5,347,377 five,381,720 680,573 - 85,828 204,345 - 226,317
    Colorado [vii] 1,202,364 one,075,475 - - xiii,807 ten,164 48,367 - 1,800,711
    Connecticut [viii] 926,567 510,012 1,025,878 - - - - - 42,619
    Delaware [ix] 355,522 208,305 173,663 - 271 735 2,046 353 3,593
    District of Columbia [ten] 400,274 29,368 85,321 - - 3,872 2,147 - 1,556
    Florida [11] 5,267,864 5,178,159 3,829,504 - - - - - 246,276
    Idaho [12] 136,582 523,887 307,746 - iii,650 - x,587 - 0
    Iowa [13] 717,368 739,193 722,136 - - - - - 19,644
    Kansas [fourteen] 499,699 856,026 530,240 - - - twenty,925 - 0
    Kentucky [15] 1,652,069 1,575,249 130,908 - 1,009 2,007 14,272 - 184,862
    Louisiana [xvi] one,223,296 1,007,682 - - - - - - 806,752
    Maine [17] 406,067 322,708 364,274 - - 45,752 - - 0
    Maryland [18] ii,262,797 1,015,812 766,788 - - 5,917 xiv,950 - 43,498
    Massachusetts [19] 1,494,980 459,663 two,717,293 - - - - - sixty,004
    Nebraska [20] 359,656 595,041 269,321 - - - eighteen,101 - 194
    Nevada [21] 719,868 620,245 524,941 93,640 - - 20,577 - 47,817
    New Hampshire [22] 326,735 309,281 408,092 - - - - - 0
    New Jersey [23] ii,554,293 1,464,449 2,433,541 - 16,960 xi,786 twenty,323 - 33,040
    New Mexico [24] 603,593 418,240 295,004 - - - thirteen,015 - xiv,357
    New York [25] 6,748,526 ii,914,704 iii,015,356 - - - - 48,207 667,318
    North Carolina [26] two,483,506 2,162,456 ii,393,552 - 26 viii 46,037 - 0
    Oklahoma [27] 699,424 1,102,039 355,943 - - - 16,362 - 0
    Oregon [28] ane,035,614 737,794 963,421 - 3,784 7,998 21,706 8,605 157,624
    Pennsylvania [29] four,040,673 3,420,953 885,116 - - - - - 384,406
    Rhode Island [thirty] 301,303 99,285 303,571 - - - - - 0
    South Dakota [31] 158,130 281,337 141,850 - - - ii,503 - 1,423
    U.South. Virgin Islands [32] 34,281 i,975 16,246 - - - - - 1,352
    Utah [33] 271,055 909,962 557,658 64,985 seven,065 - 21,951 - ii,528
    West Virginia [34] 408,307 434,634 257,527 - - - 8,882 - 39,442
    Wyoming [35] 46,251 195,308 34,766 - 697 - two,553 - 39
    Full 49,285,839 36,386,591 30,786,424 839,198 47,915 175,685 559,504 57,165 6,373,014

    Correlations with electoral outcomes

    The tables compare partisan affiliation figures and electoral outcomes in the 31 states that let voters to bespeak partisan amalgamation on their voter registration forms.

    Country legislative seats

    The table below compares partisan affiliation figures in the 31 states that permit voters to betoken partisan affiliation on their voter registration forms with the partisan composition of their country legislatures.

    Voter registration figures past partisan affiliation and partisan limerick of land legislative seats, every bit of June 2021
    State Democratic Republican Other[36]
    # of seats % of seats Registration % # of seats % of seats Registration % # of seats % of seats Registration %
    Alaska 35 25.0% thirteen.6% 102 72.9% 24.9% 0 0.0% 61.6%
    Arizona 43 47.8% 31.7% 47 52.2% 34.i% 0 0.0% 34.ii%
    Arkansas 29 21.five% 5.i% 105 77.8% 6.6% one 0.7% 88.2%
    California xc 75.0% 46.iii% 28 23.3% 24.one% 1 0.8% 29.6%
    Colorado 61 61.0% 29.0% 39 39.0% 25.nine% 0 0.0% 45.one%
    Connecticut 120 64.2% 37.0% 66 35.three% xx.4% 0 0.0% 42.vii%
    Delaware forty 64.v% 47.8% 22 35.five% 28.0% 0 0.0% 24.3%
    District of Columbia - - 76.6% - - 5.6% - - 17.8%
    Florida 58 36.3% 36.3% 102 63.8% 35.7% 0 0.0% 28.1%
    Idaho 19 18.1% 13.9% 86 81.ix% 53.iii% 0 0.0% 32.8%
    Iowa 59 39.three% 32.6% 91 threescore.7% 33.6% 0 0.0% 33.7%
    Kansas 50 xxx.3% 26.ii% 115 69.7% 44.9% 0 0.0% 28.9%
    Kentucky 33 23.9% 46.four% 105 76.1% 44.2% 0 0.0% 9.4%
    Louisiana 45 31.3% xl.3% 95 66.0% 33.ii% 3 2.1% 26.half-dozen%
    Maine 102 54.8% 35.seven% 79 42.5% 28.three% 5 2.vii% 36.0%
    Maryland 131 69.7% 55.one% 57 30.3% 24.7% 0 0.0% 20.2%
    Massachusetts 166 83.0% 31.6% 33 16.5% 9.7% 1 0.5% 58.7%
    Nebraska 17 34.7% 29.0% 32 65.3% 47.9% 0 0.0% 23.two%
    Nevada 38 sixty.iii% 35.5% 25 39.seven% 30.6% 0 0.0% 33.9%
    New Hampshire 196 46.2% 31.three% 226 53.3% 29.half-dozen% 0 0.0% 39.1%
    New Jersey 77 64.two% 39.one% 43 35.8% 22.4% 0 0.0% 38.v%
    New United mexican states 72 64.3% 44.9% 39 34.8% 31.1% 1 0.9% 24.0%
    New York 149 lxx.0% 50.4% 63 29.6% 21.eight% 1 0.5% 27.9%
    North Carolina 73 42.9% 35.ane% 97 57.1% 30.5% 0 0.0% 34.4%
    Oklahoma 28 18.viii% 32.ii% 121 81.2% l.7% 0 0.0% 17.1%
    Oregon 55 61.1% 35.3% 33 36.7% 25.ane% i one.1% 39.6%
    Pennsylvania 110 43.five% 46.3% 141 55.7% 39.ii% 1 0.4% 14.5%
    Rhode Island 98 86.7% 42.8% fifteen 13.iii% 14.1% 0 0.0% 43.1%
    South Dakota 5 5.1% 27.0% 94 94.ix% 48.i% 0 0.0% 24.nine%
    U.Southward. Virgin Islands - - 63.7% - - iii.7% - - 32.7%
    Utah 23 22.one% 14.8% 81 77.ix% 49.6% 0 0.0% 35.six%
    Westward Virginia 33 24.half dozen% 35.five% 101 75.four% 37.8% 0 0.0% 26.6%
    Wyoming nine 10.0% xvi.v% 79 87.viii% 69.8% 2 2.ii% xiii.vi%
    Total ii,064 46.4% 39.half-dozen% two,362 53.0% 29.two% 17 0.4% 31.ii%

    Congressional seats

    The table below compares partisan affiliation figures in the 31 states that study voter registration data with the partisan composition of their U.Due south. Firm congressional delegations.

    Voter registration figures past partisan affiliation and partisan composition of U.S. House seats, equally of June 2021
    State Democratic Republican Other[37]
    # of seats % of seats Registration % # of seats % of seats Registration % # of seats % of seats Registration %
    Alaska 0 0.0% 13.6% i 100.0% 24.9% 0 0.0% 61.half dozen%
    Arizona five 55.six% 31.vii% 4 44.4% 34.one% 0 0.0% 34.2%
    Arkansas 0 0.0% v.i% iv 100.0% 6.6% 0 0.0% 88.two%
    California 42 79.2% 46.3% xi xx.8% 24.one% 0 0.0% 29.6%
    Colorado 4 57.1% 29.0% three 42.9% 25.9% 0 0.0% 45.1%
    Connecticut 5 100.0% 37.0% 0 0.0% 20.iv% 0 0.0% 42.7%
    Delaware 1 100.0% 47.8% 0 0.0% 28.0% 0 0.0% 24.3%
    District of Columbia - - 76.6% - - 5.six% - - 17.8%
    Florida 10 37.0% 36.three% 16 59.3% 35.seven% 0 0.0% 28.1%
    Idaho 0 0.0% xiii.nine% 2 100.0% 53.iii% 0 0.0% 32.8%
    Iowa 1 25.0% 32.6% 3 75.0% 33.6% 0 0.0% 17.8%
    Kansas i 25.0% 36.3% 3 75.0% 35.7% 0 0.0% 28.i%
    Kentucky 1 16.7% 46.4% 5 83.three% 44.2% 0 0.0% 9.iv%
    Louisiana ane 16.seven% 40.3% 5 83.3% 33.2% 0 0.0% 26.6%
    Maine 2 100.0% 35.7% 0 0.0% 28.iii% 0 0.0% 36.0%
    Maryland 7 87.5% 55.1% 1 12.five% 24.vii% 0 0.0% xx.ii%
    Massachusetts 9 100.0% 31.half dozen% 0 0.0% ix.7% 0 0.0% 58.7%
    Nebraska 0 0.0% 29.0% iii 100.0% 47.ix% 0 0.0% 23.two%
    Nevada iii 75.0% 35.5% 1 25.0% thirty.six% 0 0.0% 33.9%
    New Hampshire 2 100.0% 31.three% 0 0.0% 29.6% 0 0.0% 39.one%
    New Jersey 10 83.3% 39.1% 2 xvi.7% 22.4% 0 0.0% 38.5%
    New Mexico two 66.7% 44.9% 1 33.3% 31.1% 0 0.0% 24.0%
    New York 19 70.4% 50.four% eight 29.6% 21.8% 0 0.0% 27.9%
    N Carolina 5 38.v% 35.1% 8 61.5% 30.5% 0 0.0% 34.iv%
    Oklahoma 0 0.0% 32.2% 5 100.0% 50.7% 0 0.0% 17.1%
    Oregon four 80.0% 35.iii% ane twenty.0% 25.1% 0 0.0% 39.6%
    Pennsylvania 9 50.0% 46.three% 9 l.0% 39.2% 0 0.0% fourteen.v%
    Rhode Island 2 100.0% 42.8% 0 0.0% 14.1% 0 0.0% 43.ane%
    South Dakota 0 0.0% 27.0% 1 100.0% 48.1% 0 0.0% 24.nine%
    U.Southward. Virgin Islands - - 63.vii% - - 3.7% - - 32.vii%
    Utah 1 25.0% 14.eight% 3 75.0% 49.half dozen% 0 0.0% 35.6%
    Due west Virginia 0 0.0% 35.5% 3 100.0% 37.8% 0 0.0% 26.6%
    Wyoming 0 0.0% xvi.5% i 100.0% 69.8% 0 0.0% 13.6%
    Total 146 58.ii% 39.half-dozen% 104 41.4% 29.two% 0 0.0% 31.2%

    Presidential popular vote

    The tabular array beneath compares partisan affiliation figures in the 31 states that report voter registration data with the popular vote for president in the 2020 presidential election.

    Voter registration figures past partisan affiliation and presidential pop vote figures, equally of June 2021
    State Democratic Republican Other[38]
    Raw popular vote % pop vote Registration % Raw popular vote % pop vote Registration % Raw popular vote % popular vote Registration %
    Alaska 153,778 42.viii% 13.6% 189,951 52.8% 24.nine% xv,801 four.4% 61.half dozen%
    Arizona 1,672,143 49.iv% 31.vii% one,661,686 49.ane% 34.i% 53,497 1.half dozen% 34.ii%
    Arkansas 423,932 34.8% v.1% 760,647 62.four% 6.half-dozen% 34,490 2.8% 88.2%
    California xi,110,250 63.five% 46.three% half-dozen,006,429 34.3% 24.ane% 384,202 2.two% 29.vi%
    Colorado ane,804,352 55.four% 29.0% 1,364,607 41.9% 25.9% 87,993 2.7% 45.one%
    Connecticut one,080,831 59.3% 37.0% 714,717 39.two% 20.four% 28,309 1.6% 42.7%
    Delaware 296,268 58.7% 47.8% 200,603 39.eight% 28.0% 7,475 1.5% 24.iii%
    Commune of Columbia 317,323 94.v% 76.6% xviii,586 v.5% v.6% 0 0.0% 17.8%
    Florida 5,297,045 47.9% 36.3% 5,668,731 51.2% 35.7% 101,680 0.9% 28.1%
    Idaho 287,021 33.ane% xiii.ix% 554,119 63.8% 53.three% 26,874 3.1% 32.eight%
    Iowa 759,061 44.ix% 32.6% 897,672 53.1% 33.6% 34,138 ii.0% 17.eight%
    Kansas 570,323 41.half-dozen% 36.3% 771,406 56.2% 35.7% 30,574 2.ii% 28.1%
    Kentucky 772,474 36.2% 46.4% 1,326,646 62.1% 44.2% 37,648 1.viii% 9.4%
    Louisiana 856,034 39.nine% 40.3% 1,255,776 58.5% 33.2% 36,252 1.7% 26.half-dozen%
    Maine 435,072 53.1% 35.7% 360,737 44.0% 28.3% 23,652 ii.9% 36.0%
    Maryland 1,985,023 65.4% 55.1% 976,414 32.2% 24.vii% 75,593 2.v% twenty.2%
    Massachusetts 2,382,202 65.six% 31.6% 1,167,202 32.1% 9.7% 81,998 2.3% 58.seven%
    Nebraska 374,583 39.4% 29.0% 556,846 58.v% 47.9% 20,283 2.i% 23.2%
    Nevada 703,486 50.1% 35.v% 669,890 47.7% 30.6% 32,000 2.iii% 33.nine%
    New Hampshire 424,937 52.seven% 31.three% 365,660 45.iv% 29.6% 15,608 1.9% 39.one%
    New Jersey 2,608,335 57.3% 39.one% 1,883,274 41.4% 22.4% 57,744 1.3% 38.v%
    New United mexican states 501,614 54.three% 44.9% 401,894 43.5% 31.1% 20,457 2.2% 24.0%
    New York 5,230,985 60.9% 50.4% 3,244,798 37.eight% 21.viii% 119,043 1.4% 27.ix%
    North Carolina 2,684,292 48.6% 35.one% 2,758,775 49.9% 30.five% 81,737 1.5% 34.four%
    Oklahoma 503,890 32.3% 32.two% one,020,280 65.4% l.7% 36,529 two.3% 17.1%
    Oregon 1,340,383 56.5% 35.3% 958,448 40.iv% 25.i% 75,490 3.2% 39.vi%
    Pennsylvania 3,458,229 50.0% 46.three% 3,377,674 48.8% 39.2% 79,380 one.ane% xiv.five%
    Rhode Island 307,486 59.iv% 42.8% 199,922 38.6% 14.one% 10,349 ii.0% 43.1%
    South Dakota 150,471 35.6% 27.0% 261,043 61.8% 48.1% xi,095 2.half-dozen% 24.9%
    U.Due south. Virgin Islands - - 63.7% - - 3.7% - - 32.7%
    Utah 560,282 37.half-dozen% 14.eight% 865,140 58.ane% 49.6% 62,867 4.2% 35.6%
    West Virginia 235,984 29.7% 35.5% 545,382 68.6% 37.8% 13,286 1.7% 26.6%
    Wyoming 73,491 26.4% sixteen.5% 193,559 69.5% 69.viii% 11,453 4.1% 13.half dozen%
    Total 49,361,580 53.5% 39.half dozen% 41,198,514 44.7% 29.ii% 1,708,047 1.9% 31.2%

    State legislative trifectas and legislative bedchamber control

    The tabular array beneath compares partisan affiliation figures in the 31 states that permit voters to indicate partisan affiliation on their voter registration forms with the presence of trifectas and the partisan command of legislative chambers. A land regime trifecta is a term to describe single party government, when 1 political party holds three positions in a land'south government

    Voter registration figures by trifecta status, partisan affiliation, and partisan command of legislative chambers, June 2021
    State Governor's party Trifecta? Autonomous Republican Other[39]
    Registration % # of chambers Registration % # of chambers Registration % # of chambers
    Alaska Republican No 13.6% 0 24.9% 1 61.6% i
    Arizona Republican Yeah 31.seven% 0 34.i% ii 34.2% 0
    Arkansas Republican Yep v.1% 0 half-dozen.6% two 88.2% 0
    California Democrat Yeah 46.three% two 24.1% 0 29.6% 0
    Colorado Democrat Yes 29.0% two 25.9% 0 45.1% 0
    Connecticut Democrat Yes 37.0% 2 20.4% 0 42.vii% 0
    Delaware Democrat Aye 47.8% 2 28.0% 0 24.3% 0
    District of Columbia - - 76.six% - 5.6% - 17.eight% -
    Florida Republican Aye 36.3% 0 35.seven% 2 28.1% 0
    Idaho Republican Yes 13.ix% 0 53.3% 2 32.8% 0
    Iowa Republican Yes 32.6% 0 33.6% ii 17.viii% 0
    Kansas Democrat No 36.3% 0 35.7% 2 28.1% 0
    Kentucky Democrat No 46.4% 0 44.2% two nine.4% 0
    Louisiana Democrat No 40.iii% 0 33.2% ii 26.6% 0
    Maine Democrat Yep 35.7% 2 28.3% 0 36.0% 0
    Maryland Republican No 55.ane% 2 24.7% 0 20.2% 0
    Massachusetts Republican No 31.half dozen% ii 9.vii% 0 58.vii% 0
    Nebraska Republican Yes 29.0% 0 47.9% 1 23.2% 0
    Nevada Democrat Yeah 35.5% two xxx.6% 0 33.9% 0
    New Hampshire Republican Yep 31.3% 0 29.6% ii 39.1% 0
    New Jersey Democrat Yes 39.one% 2 22.4% 0 38.v% 0
    New Mexico Democrat Yeah 44.9% 2 31.one% 0 24.0% 0
    New York Democrat Aye 50.4% 2 21.8% 0 27.9% 0
    Northward Carolina Democrat No 35.1% 0 xxx.5% 2 34.4% 0
    Oklahoma Republican Yes 32.ii% 0 50.7% 2 17.i% 0
    Oregon Democrat Yes 35.3% 2 25.1% 0 39.6% 0
    Pennsylvania Democrat No 46.3% 0 39.2% 2 14.5% 0
    Rhode Isle Democrat Yeah 42.8% 2 14.1% 0 43.1% 0
    South Dakota Republican Yep 27.0% 0 48.i% 2 24.9% 0
    U.Due south. Virgin Islands - - 63.vii% - 3.7% - 32.7% -
    Utah Republican Yeah 14.8% 0 49.six% 2 35.vi% 0
    West Virginia Republican Yeah 35.5% 0 37.viii% 2 26.6% 0
    Wyoming Republican Yes sixteen.five% 0 69.8% 2 13.six% 0
    Total 39.six% 26 29.2% 34 31.2% one

    Historical information

    The tables beneath provide historical information virtually voter registration past partisan affiliation. Click "[evidence]" on the righthand side of the table header to see consummate data.[40] [41] [42] [43] [44] [45] [46] [47] [48] [49]

    2017

    2016

    2014

    2012

    2010

    2008

    2006

    2004

    2002

    2000

    See also

    • Voter registration

    External links

    • Election Admission News
    • U.S. Election Assistance Commission, "National Mail Voter Registration Course"

    Footnotes

    1. A cell with - ways the state did non list political party affiliation data for that party in the source institute by Ballotpedia
    2. This category includes figures if listed equally "Other" on the official source found by Ballotpedia. It likewise includes whatever additional registration categories not listed in the columns to the left.
    3. Source
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    29. Source
    30. Source
    31. Source
    32. Source
    33. Source
    34. Source
    35. Source
    36. This category includes all non-major political party registrations equally well as vacant seats.
    37. This category includes all non-major political party registrations.
    38. This category includes all non-major party registrations.
    39. This category includes all non-major party registrations.
    40. Ballot Admission News, "Baronial 2017 Print Edition," August one, 2017
    41. Ballot Access News, "December 2016 Print Edition," Dec ane, 2016
    42. Election Admission News, "December 2014 Print Edition," December 1, 2014
    43. Ballot Access News, 'December 2012 Impress Edition," December 1, 2012
    44. Ballot Access News, 'December 2010 Impress Edition," December 1, 2010
    45. Ballot Access News, "Dec 2008 Print Edition," December 1, 2008
    46. Election Access News, "Jan 2007 Impress Edition," January 1, 2007
    47. Ballot Access News, "December 2004 Impress Edition," Dec 12, 2004
    48. Ballot Admission News, "December 2002 Impress Edition," Dec 1, 2002
    49. Ballot Access News, "December 2000 Print Edition," December five, 2000