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As of July 2021, 31 states (plus the District of Columbia and the U.South. Virgin Islands) allowed voters to indicate their partisan affiliations on voter registration forms and reported total registration numbers publicly. The remaining 19 states either did not enquire voters to indicate partisan affiliation on their registration forms or did not publicly report those totals, according to analysis done by Ballotpedia.

This article provides details well-nigh the number of registered voters by partisan affiliations in those states that allow voters to register by party and study those totals publicly. Historical information dating dorsum to 2000 was provided to Ballotpedia by Richard Winger, the editor and publisher of Ballot Access News.

HIGHLIGHTS

  • Equally of July 2021, 49.3 million registered voters identified themselves as Democrats. At 39.half-dozen%, Democrats represented the unmarried largest share of registered voters in those states that allow voters to indicate partisan affiliation on their registration forms. A total of 36.4 1000000 registered voters identified themselves as Republicans, representing 29.2% of registered voters in these states.
  • Approximately 38.eight meg registered voters identified themselves as independents or members of third-parties. This amounted to 31.two% 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'southward (R) 44.7% across these states. Both candidates received a larger percentage of votes than the percentage of their respective party's registered voters. Independent and third-party voters made up 31.ii% of all registered voters in these states, while independent and third-party presidential candidates received i.nine% 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's primaries. To learn more about primary participation criteria, click hither.
  • 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 single grouping of voters made up a majority of registrants: in 10 states, Democrats made upward a plurality of registered voters and Republicans made up a plurality in four. Voters registered as contained or with a tertiary party made upwardly a plurality of registrants in viii states. Democrats made up a majority of registered voters in 2 states—Maryland and New York—and Republicans made up a majority in four—Idaho, Oklahoma, Utah, and Wyoming. Contained or third party registrants made up a bulk in iii states—Alaska, Arkansas, and Massachusetts.

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

    Voter registration figures by partisan affiliation, as of June 2021[1]
    State Autonomous Republican Independent/
    nonpartisan
    American Independent Constitution Green Libertarian Working Families Other[ii]
    Alaska [three] 81,255 149,173 338,931 - 646 1,524 6,948 - 21,127
    Arizona [4] ane,489,356 i,603,522 - - - - 42,220 - one,566,514
    Arkansas [5] 90,420 117,277 i,556,117 - - 94 687 - i
    California [vi] 10,288,144 5,347,377 five,381,720 680,573 - 85,828 204,345 - 226,317
    Colorado [7] ane,202,364 i,075,475 - - 13,807 x,164 48,367 - 1,800,711
    Connecticut [viii] 926,567 510,012 i,025,878 - - - - - 42,619
    Delaware [9] 355,522 208,305 173,663 - 271 735 2,046 353 3,593
    District of Columbia [10] 400,274 29,368 85,321 - - 3,872 2,147 - i,556
    Florida [11] v,267,864 v,178,159 3,829,504 - - - - - 246,276
    Idaho [12] 136,582 523,887 307,746 - iii,650 - 10,587 - 0
    Iowa [13] 717,368 739,193 722,136 - - - - - xix,644
    Kansas [fourteen] 499,699 856,026 530,240 - - - xx,925 - 0
    Kentucky [15] 1,652,069 ane,575,249 130,908 - 1,009 2,007 fourteen,272 - 184,862
    Louisiana [16] i,223,296 1,007,682 - - - - - - 806,752
    Maine [17] 406,067 322,708 364,274 - - 45,752 - - 0
    Maryland [xviii] 2,262,797 1,015,812 766,788 - - 5,917 14,950 - 43,498
    Massachusetts [19] ane,494,980 459,663 2,717,293 - - - - - lx,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 Bailiwick of jersey [23] 2,554,293 1,464,449 ii,433,541 - 16,960 eleven,786 xx,323 - 33,040
    New United mexican states [24] 603,593 418,240 295,004 - - - 13,015 - 14,357
    New York [25] 6,748,526 2,914,704 3,015,356 - - - - 48,207 667,318
    Due north Carolina [26] 2,483,506 ii,162,456 two,393,552 - 26 8 46,037 - 0
    Oklahoma [27] 699,424 1,102,039 355,943 - - - 16,362 - 0
    Oregon [28] 1,035,614 737,794 963,421 - 3,784 7,998 21,706 eight,605 157,624
    Pennsylvania [29] iv,040,673 3,420,953 885,116 - - - - - 384,406
    Rhode Island [30] 301,303 99,285 303,571 - - - - - 0
    Southward Dakota [31] 158,130 281,337 141,850 - - - 2,503 - 1,423
    U.South. Virgin Islands [32] 34,281 1,975 16,246 - - - - - 1,352
    Utah [33] 271,055 909,962 557,658 64,985 7,065 - 21,951 - 2,528
    West Virginia [34] 408,307 434,634 257,527 - - - 8,882 - 39,442
    Wyoming [35] 46,251 195,308 34,766 - 697 - 2,553 - 39
    Total 49,285,839 36,386,591 30,786,424 839,198 47,915 175,685 559,504 57,165 half-dozen,373,014

    Correlations with electoral outcomes

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

    Country legislative seats

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

    Voter registration figures by partisan affiliation and partisan composition of country legislative seats, equally 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% 13.half-dozen% 102 72.9% 24.9% 0 0.0% 61.6%
    Arizona 43 47.eight% 31.7% 47 52.two% 34.1% 0 0.0% 34.2%
    Arkansas 29 21.five% 5.1% 105 77.8% vi.6% 1 0.seven% 88.2%
    California 90 75.0% 46.3% 28 23.3% 24.1% one 0.8% 29.6%
    Colorado 61 61.0% 29.0% 39 39.0% 25.ix% 0 0.0% 45.i%
    Connecticut 120 64.ii% 37.0% 66 35.3% 20.4% 0 0.0% 42.7%
    Delaware forty 64.5% 47.8% 22 35.five% 28.0% 0 0.0% 24.3%
    District of Columbia - - 76.6% - - 5.half dozen% - - 17.eight%
    Florida 58 36.iii% 36.iii% 102 63.8% 35.vii% 0 0.0% 28.1%
    Idaho 19 18.one% 13.9% 86 81.ix% 53.3% 0 0.0% 32.8%
    Iowa 59 39.3% 32.half-dozen% 91 threescore.7% 33.6% 0 0.0% 33.seven%
    Kansas 50 30.3% 26.2% 115 69.7% 44.nine% 0 0.0% 28.nine%
    Kentucky 33 23.ix% 46.4% 105 76.1% 44.2% 0 0.0% ix.4%
    Louisiana 45 31.3% 40.3% 95 66.0% 33.ii% iii two.ane% 26.6%
    Maine 102 54.8% 35.vii% 79 42.5% 28.3% five 2.vii% 36.0%
    Maryland 131 69.7% 55.1% 57 30.iii% 24.7% 0 0.0% 20.two%
    Massachusetts 166 83.0% 31.vi% 33 16.five% 9.7% one 0.5% 58.7%
    Nebraska 17 34.7% 29.0% 32 65.3% 47.9% 0 0.0% 23.2%
    Nevada 38 60.3% 35.5% 25 39.7% 30.6% 0 0.0% 33.nine%
    New Hampshire 196 46.2% 31.three% 226 53.iii% 29.6% 0 0.0% 39.1%
    New Jersey 77 64.2% 39.1% 43 35.eight% 22.four% 0 0.0% 38.5%
    New Mexico 72 64.3% 44.9% 39 34.8% 31.1% ane 0.ix% 24.0%
    New York 149 70.0% 50.iv% 63 29.vi% 21.8% 1 0.v% 27.9%
    North Carolina 73 42.9% 35.1% 97 57.one% 30.5% 0 0.0% 34.4%
    Oklahoma 28 xviii.8% 32.2% 121 81.2% 50.7% 0 0.0% 17.ane%
    Oregon 55 61.i% 35.three% 33 36.seven% 25.one% 1 i.1% 39.6%
    Pennsylvania 110 43.five% 46.3% 141 55.7% 39.2% 1 0.iv% 14.5%
    Rhode Island 98 86.vii% 42.8% 15 13.iii% 14.1% 0 0.0% 43.1%
    Due south Dakota v 5.1% 27.0% 94 94.9% 48.1% 0 0.0% 24.9%
    U.Due south. Virgin Islands - - 63.7% - - iii.7% - - 32.vii%
    Utah 23 22.1% 14.eight% 81 77.9% 49.half-dozen% 0 0.0% 35.6%
    W Virginia 33 24.half dozen% 35.v% 101 75.4% 37.viii% 0 0.0% 26.half-dozen%
    Wyoming ix 10.0% sixteen.five% 79 87.8% 69.viii% 2 2.two% 13.vi%
    Total 2,064 46.4% 39.6% 2,362 53.0% 29.2% 17 0.4% 31.ii%

    Congressional seats

    The table beneath compares partisan affiliation figures in the 31 states that report voter registration data with the partisan composition of their U.S. Firm congressional delegations.

    Voter registration figures by partisan affiliation and partisan composition of U.South. Business firm seats, as 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% xiii.half dozen% ane 100.0% 24.9% 0 0.0% 61.6%
    Arizona 5 55.6% 31.7% four 44.4% 34.1% 0 0.0% 34.2%
    Arkansas 0 0.0% 5.1% 4 100.0% 6.6% 0 0.0% 88.ii%
    California 42 79.two% 46.3% 11 20.8% 24.1% 0 0.0% 29.6%
    Colorado 4 57.1% 29.0% iii 42.9% 25.nine% 0 0.0% 45.ane%
    Connecticut five 100.0% 37.0% 0 0.0% xx.4% 0 0.0% 42.7%
    Delaware one 100.0% 47.8% 0 0.0% 28.0% 0 0.0% 24.iii%
    District of Columbia - - 76.6% - - v.vi% - - 17.8%
    Florida 10 37.0% 36.three% 16 59.3% 35.seven% 0 0.0% 28.i%
    Idaho 0 0.0% 13.9% ii 100.0% 53.3% 0 0.0% 32.eight%
    Iowa ane 25.0% 32.vi% 3 75.0% 33.6% 0 0.0% 17.8%
    Kansas 1 25.0% 36.3% 3 75.0% 35.7% 0 0.0% 28.i%
    Kentucky 1 xvi.7% 46.four% 5 83.3% 44.2% 0 0.0% ix.4%
    Louisiana ane 16.7% xl.3% five 83.3% 33.ii% 0 0.0% 26.half-dozen%
    Maine 2 100.0% 35.7% 0 0.0% 28.3% 0 0.0% 36.0%
    Maryland 7 87.5% 55.1% 1 12.5% 24.7% 0 0.0% 20.2%
    Massachusetts 9 100.0% 31.6% 0 0.0% 9.7% 0 0.0% 58.7%
    Nebraska 0 0.0% 29.0% 3 100.0% 47.9% 0 0.0% 23.2%
    Nevada 3 75.0% 35.v% 1 25.0% 30.6% 0 0.0% 33.9%
    New Hampshire 2 100.0% 31.three% 0 0.0% 29.6% 0 0.0% 39.1%
    New Bailiwick of jersey x 83.iii% 39.ane% ii 16.7% 22.4% 0 0.0% 38.five%
    New Mexico 2 66.seven% 44.9% ane 33.3% 31.1% 0 0.0% 24.0%
    New York xix 70.4% 50.4% 8 29.6% 21.viii% 0 0.0% 27.9%
    N Carolina 5 38.5% 35.1% 8 61.5% 30.v% 0 0.0% 34.4%
    Oklahoma 0 0.0% 32.2% v 100.0% fifty.seven% 0 0.0% 17.1%
    Oregon 4 80.0% 35.three% 1 20.0% 25.ane% 0 0.0% 39.6%
    Pennsylvania 9 50.0% 46.3% 9 50.0% 39.ii% 0 0.0% xiv.five%
    Rhode Isle two 100.0% 42.8% 0 0.0% 14.1% 0 0.0% 43.1%
    South Dakota 0 0.0% 27.0% 1 100.0% 48.1% 0 0.0% 24.9%
    U.S. Virgin Islands - - 63.seven% - - 3.7% - - 32.7%
    Utah i 25.0% 14.8% 3 75.0% 49.vi% 0 0.0% 35.6%
    W Virginia 0 0.0% 35.5% 3 100.0% 37.8% 0 0.0% 26.6%
    Wyoming 0 0.0% 16.5% 1 100.0% 69.8% 0 0.0% 13.half-dozen%
    Full 146 58.two% 39.6% 104 41.4% 29.two% 0 0.0% 31.2%

    Presidential pop vote

    The table beneath compares partisan affiliation figures in the 31 states that report voter registration information with the popular vote for president in the 2020 presidential ballot.

    Voter registration figures past partisan affiliation and presidential popular vote figures, every bit of June 2021
    State Democratic Republican Other[38]
    Raw pop vote % popular vote Registration % Raw popular vote % popular vote Registration % Raw popular vote % popular vote Registration %
    Alaska 153,778 42.viii% 13.6% 189,951 52.eight% 24.ix% 15,801 4.4% 61.6%
    Arizona 1,672,143 49.4% 31.7% 1,661,686 49.1% 34.1% 53,497 1.6% 34.2%
    Arkansas 423,932 34.8% 5.1% 760,647 62.4% 6.6% 34,490 two.eight% 88.ii%
    California 11,110,250 63.5% 46.3% six,006,429 34.3% 24.1% 384,202 2.ii% 29.half dozen%
    Colorado i,804,352 55.4% 29.0% ane,364,607 41.9% 25.9% 87,993 two.7% 45.1%
    Connecticut 1,080,831 59.three% 37.0% 714,717 39.2% 20.4% 28,309 one.6% 42.vii%
    Delaware 296,268 58.7% 47.8% 200,603 39.8% 28.0% seven,475 1.5% 24.3%
    District of Columbia 317,323 94.v% 76.6% 18,586 v.5% five.six% 0 0.0% 17.8%
    Florida 5,297,045 47.9% 36.iii% v,668,731 51.2% 35.7% 101,680 0.9% 28.ane%
    Idaho 287,021 33.1% xiii.9% 554,119 63.8% 53.3% 26,874 iii.ane% 32.8%
    Iowa 759,061 44.ix% 32.6% 897,672 53.1% 33.half dozen% 34,138 two.0% 17.viii%
    Kansas 570,323 41.6% 36.3% 771,406 56.ii% 35.seven% thirty,574 2.two% 28.1%
    Kentucky 772,474 36.2% 46.4% 1,326,646 62.i% 44.ii% 37,648 1.8% nine.4%
    Louisiana 856,034 39.9% 40.3% 1,255,776 58.five% 33.two% 36,252 i.7% 26.6%
    Maine 435,072 53.1% 35.7% 360,737 44.0% 28.3% 23,652 2.nine% 36.0%
    Maryland 1,985,023 65.4% 55.1% 976,414 32.2% 24.7% 75,593 2.5% 20.two%
    Massachusetts ii,382,202 65.6% 31.6% one,167,202 32.1% 9.7% 81,998 2.3% 58.seven%
    Nebraska 374,583 39.four% 29.0% 556,846 58.5% 47.9% twenty,283 2.i% 23.2%
    Nevada 703,486 50.1% 35.5% 669,890 47.7% xxx.6% 32,000 2.3% 33.9%
    New Hampshire 424,937 52.7% 31.3% 365,660 45.4% 29.half-dozen% 15,608 1.9% 39.1%
    New Jersey 2,608,335 57.3% 39.i% 1,883,274 41.4% 22.4% 57,744 1.three% 38.five%
    New Mexico 501,614 54.three% 44.nine% 401,894 43.v% 31.1% 20,457 2.2% 24.0%
    New York 5,230,985 60.ix% 50.4% 3,244,798 37.8% 21.viii% 119,043 1.4% 27.9%
    North Carolina 2,684,292 48.6% 35.1% ii,758,775 49.9% 30.5% 81,737 ane.5% 34.4%
    Oklahoma 503,890 32.3% 32.ii% one,020,280 65.4% l.7% 36,529 ii.3% 17.1%
    Oregon 1,340,383 56.5% 35.3% 958,448 40.4% 25.1% 75,490 3.two% 39.6%
    Pennsylvania 3,458,229 50.0% 46.3% 3,377,674 48.eight% 39.2% 79,380 i.i% 14.v%
    Rhode Island 307,486 59.iv% 42.8% 199,922 38.6% fourteen.one% 10,349 2.0% 43.i%
    S Dakota 150,471 35.6% 27.0% 261,043 61.8% 48.1% eleven,095 ii.half-dozen% 24.9%
    U.S. Virgin Islands - - 63.seven% - - 3.seven% - - 32.vii%
    Utah 560,282 37.6% 14.eight% 865,140 58.one% 49.6% 62,867 iv.2% 35.vi%
    West Virginia 235,984 29.7% 35.five% 545,382 68.six% 37.eight% thirteen,286 1.7% 26.vi%
    Wyoming 73,491 26.4% 16.5% 193,559 69.5% 69.8% eleven,453 iv.1% thirteen.6%
    Total 49,361,580 53.5% 39.6% 41,198,514 44.7% 29.2% 1,708,047 1.9% 31.two%

    State legislative trifectas and legislative chamber control

    The tabular array below compares partisan affiliation figures in the 31 states that permit voters to indicate partisan amalgamation on their voter registration forms with the presence of trifectas and the partisan control of legislative chambers. A state government trifecta is a term to describe single political party government, when i political party holds iii positions in a state's authorities

    Voter registration figures past trifecta status, partisan affiliation, and partisan control of legislative chambers, June 2021
    Country Governor'south party Trifecta? Autonomous Republican Other[39]
    Registration % # of chambers Registration % # of chambers Registration % # of chambers
    Alaska Republican No thirteen.six% 0 24.9% 1 61.half dozen% ane
    Arizona Republican Yes 31.vii% 0 34.1% 2 34.2% 0
    Arkansas Republican Yep 5.1% 0 vi.half-dozen% ii 88.2% 0
    California Democrat Yes 46.three% ii 24.ane% 0 29.6% 0
    Colorado Democrat Yes 29.0% 2 25.nine% 0 45.1% 0
    Connecticut Democrat Yes 37.0% two 20.4% 0 42.7% 0
    Delaware Democrat Yes 47.8% 2 28.0% 0 24.3% 0
    Commune of Columbia - - 76.6% - five.half dozen% - 17.8% -
    Florida Republican Aye 36.three% 0 35.vii% ii 28.1% 0
    Idaho Republican Aye 13.9% 0 53.three% ii 32.8% 0
    Iowa Republican Aye 32.6% 0 33.half dozen% 2 17.eight% 0
    Kansas Democrat No 36.3% 0 35.7% ii 28.ane% 0
    Kentucky Democrat No 46.four% 0 44.2% ii 9.4% 0
    Louisiana Democrat No twoscore.3% 0 33.2% 2 26.6% 0
    Maine Democrat Yes 35.seven% 2 28.3% 0 36.0% 0
    Maryland Republican No 55.i% ii 24.7% 0 20.2% 0
    Massachusetts Republican No 31.six% 2 9.seven% 0 58.7% 0
    Nebraska Republican Yes 29.0% 0 47.9% i 23.two% 0
    Nevada Democrat Yes 35.5% 2 30.6% 0 33.9% 0
    New Hampshire Republican Yes 31.iii% 0 29.vi% two 39.1% 0
    New Jersey Democrat Aye 39.ane% 2 22.4% 0 38.five% 0
    New Mexico Democrat Yep 44.9% ii 31.1% 0 24.0% 0
    New York Democrat Yep 50.4% 2 21.8% 0 27.9% 0
    North Carolina Democrat No 35.1% 0 thirty.5% 2 34.four% 0
    Oklahoma Republican Yeah 32.2% 0 50.7% 2 17.ane% 0
    Oregon Democrat Yep 35.3% 2 25.ane% 0 39.6% 0
    Pennsylvania Democrat No 46.3% 0 39.2% 2 fourteen.5% 0
    Rhode Island Democrat Yep 42.8% 2 14.1% 0 43.1% 0
    South Dakota Republican Yes 27.0% 0 48.one% 2 24.nine% 0
    U.S. Virgin Islands - - 63.7% - 3.seven% - 32.7% -
    Utah Republican Yep 14.viii% 0 49.six% 2 35.6% 0
    West Virginia Republican Yes 35.5% 0 37.eight% two 26.vi% 0
    Wyoming Republican Aye 16.5% 0 69.8% ii 13.6% 0
    Total 39.6% 26 29.2% 34 31.2% i

    Historical information

    The tables below provide historical information near voter registration past partisan affiliation. Click "[prove]" on the righthand side of the table header to see complete information.[40] [41] [42] [43] [44] [45] [46] [47] [48] [49]

    2017

    2016

    2014

    2012

    2010

    2008

    2006

    2004

    2002

    2000

    See likewise

    • Voter registration

    External links

    • Election Access News
    • U.South. Ballot Assist Commission, "National Post Voter Registration Form"

    Footnotes

    1. A jail cell with - means the country did not list party affiliation information for that political party in the source constitute by Ballotpedia
    2. This category includes figures if listed equally "Other" on the official source found past Ballotpedia. Information technology also includes whatever additional registration categories not listed in the columns to the left.
    3. Source
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    30. Source
    31. Source
    32. Source
    33. Source
    34. Source
    35. Source
    36. This category includes all not-major party registrations also 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 not-major party registrations.
    40. Ballot Access News, "August 2017 Print Edition," August 1, 2017
    41. Ballot Admission News, "December 2016 Impress Edition," December ane, 2016
    42. Ballot Admission News, "December 2014 Print Edition," December one, 2014
    43. Ballot Admission News, 'Dec 2012 Print Edition," Dec 1, 2012
    44. Election Access News, 'Dec 2010 Print Edition," December 1, 2010
    45. Election Access News, "December 2008 Print Edition," December one, 2008
    46. Ballot Admission News, "January 2007 Print Edition," January one, 2007
    47. Ballot Access News, "December 2004 Print Edition," December 12, 2004
    48. Election Access News, "December 2002 Impress Edition," December i, 2002
    49. Ballot Access News, "Dec 2000 Print Edition," December v, 2000