Registered Voters by County

as of 2020-09

Participation among current voters (voter file)

Source: State Board of Elections report for 2020-09 (PDF), downloaded 2026-06-24, read from the PDF's own text and checked: each county's parties add up to its total and the 24 counties add up to the statewide row. Download this month as CSV or see its provenance record. The State Board's own report does not add up this month (2 mismatches). See the errata.
Democratic minus Republican share of active voters, as of September 2020
Allegany: Republicans +22 points Anne Arundel: Democrats +10 points Baltimore City: Democrats +71 points Baltimore County: Democrats +30 points Calvert: Republicans +5 points Caroline: Republicans +16 points Carroll: Republicans +24 points Cecil: Republicans +13 points Charles: Democrats +40 points Dorchester: Democrats +5 points Frederick: Democrats +2 points Garrett: Republicans +46 points Harford: Republicans +7 points Howard: Democrats +29 points Kent: Democrats +8 points Montgomery: Democrats +45 points Prince George's: Democrats +72 points Queen Anne's: Republicans +21 points Somerset: even St. Mary's: Republicans +6 points Talbot: Republicans +3 points Washington: Republicans +11 points Wicomico: Democrats +5 points Worcester: Republicans +10 points
  • Republican by 40+ points
  • Republican by 10 to 40
  • within 10 points
  • Democratic by 10 to 40
  • Democratic by 40+ points
Unaffiliated share of active voters, as of September 2020
Allegany: 17.6% Anne Arundel: 22.3% Baltimore City: 13.0% Baltimore County: 17.8% Calvert: 21.0% Caroline: 20.0% Carroll: 20.7% Cecil: 22.1% Charles: 16.8% Dorchester: 15.2% Frederick: 23.2% Garrett: 12.9% Harford: 20.4% Howard: 23.0% Kent: 17.0% Montgomery: 22.0% Prince George's: 12.8% Queen Anne's: 19.1% Somerset: 15.1% St. Mary's: 21.3% Talbot: 18.5% Washington: 20.9% Wicomico: 19.2% Worcester: 18.8%
  • under 15%
  • 15 to 17.5%
  • 17.5 to 20%
  • 20 to 22.5%
  • 22.5% or more
Change over a year in active voters, September 2019 to September 2020
Allegany: +1.0% Anne Arundel: +2.5% Baltimore City: +1.5% Baltimore County: +0.2% Calvert: +1.8% Caroline: +2.2% Carroll: +1.8% Cecil: +3.0% Charles: +2.7% Dorchester: +1.9% Frederick: +4.4% Garrett: +1.5% Harford: +2.1% Howard: +3.0% Kent: +1.4% Montgomery: +1.3% Prince George's: +2.0% Queen Anne's: +3.1% Somerset: +1.6% St. Mary's: +2.8% Talbot: +2.2% Washington: +2.2% Wicomico: +2.2% Worcester: +3.0%
  • fewer: under -3%
  • -3 to -1%
  • -1 to 1%
  • 1 to 3%
  • more: 3% or more
County # Reg vs month before vs year before DEM REP UNAF LIB GRN BAR WCP OTH
Allegany 43,791 +398 (+0.9%) +444 (+1.0%) 12,844 (29.3%) 22,530 (51.4%) 7,724 (17.6%) 197 (0.4%) 73 (0.2%) 19 (0.0%) 13 (0.0%) 391 (0.9%)
Anne Arundel 405,991 +4,694 (+1.2%) +9,820 (+2.5%) 174,478 (43.0%) 135,564 (33.4%) 90,602 (22.3%) 1,797 (0.4%) 546 (0.1%) 105 (0.0%) 165 (0.0%) 2,734 (0.7%)
Baltimore City 396,472 +5,514 (+1.4%) +5,957 (+1.5%) 309,855 (78.2%) 29,760 (7.5%) 51,670 (13.0%) 876 (0.2%) 757 (0.2%) 114 (0.0%) 199 (0.1%) 3,241 (0.8%)
Baltimore County 565,621 +5,609 (+1.0%) +1,235 (+0.2%) 313,060 (55.3%) 142,352 (25.2%) 100,948 (17.8%) 2,129 (0.4%) 869 (0.2%) 137 (0.0%) 224 (0.0%) 5,902 (1.0%)
Calvert 67,977 +666 (+1.0%) +1,193 (+1.8%) 24,554 (36.1%) 28,140 (41.4%) 14,269 (21.0%) 315 (0.5%) 79 (0.1%) 20 (0.0%) 24 (0.0%) 576 (0.8%)
Caroline 21,182 +249 (+1.2%) +462 (+2.2%) 6,625 (31.3%) 10,015 (47.3%) 4,244 (20.0%) 86 (0.4%) 33 (0.2%) 2 (0.0%) 13 (0.1%) 164 (0.8%)
Carroll 126,134 +1,091 (+0.9%) +2,285 (+1.8%) 33,730 (26.7%) 64,349 (51.0%) 26,136 (20.7%) 632 (0.5%) 149 (0.1%) 29 (0.0%) 27 (0.0%) 1,082 (0.9%)
Cecil 68,851 +999 (+1.5%) +2,014 (+3.0%) 21,627 (31.4%) 30,794 (44.7%) 15,238 (22.1%) 312 (0.5%) 98 (0.1%) 7 (0.0%) 43 (0.1%) 732 (1.1%)
Charles 118,590 +1,456 (+1.2%) +3,156 (+2.7%) 72,644 (61.3%) 24,690 (20.8%) 19,960 (16.8%) 331 (0.3%) 110 (0.1%) 21 (0.0%) 68 (0.1%) 766 (0.6%)
Dorchester 22,142 +235 (+1.1%) +419 (+1.9%) 9,806 (44.3%) 8,723 (39.4%) 3,360 (15.2%) 71 (0.3%) 19 (0.1%) 4 (0.0%) 12 (0.1%) 147 (0.7%)
Frederick 186,793 +2,195 (+1.2%) +7,931 (+4.4%) 72,355 (38.7%) 69,012 (36.9%) 43,375 (23.2%) 891 (0.5%) 261 (0.1%) 56 (0.0%) 58 (0.0%) 785 (0.4%)
Garrett 20,273 +177 (+0.9%) +309 (+1.5%) 4,014 (19.8%) 13,376 (66.0%) 2,612 (12.9%) 80 (0.4%) 21 (0.1%) 5 (0.0%) 10 (0.0%) 155 (0.8%)
Harford 187,691 +1,711 (+0.9%) +3,926 (+2.1%) 66,365 (35.4%) 80,275 (42.8%) 38,285 (20.4%) 907 (0.5%) 215 (0.1%) 50 (0.0%) 54 (0.0%) 1,540 (0.8%)
Howard 227,960 +2,873 (+1.3%) +6,683 (+3.0%) 119,270 (52.3%) 53,017 (23.3%) 52,435 (23.0%) 762 (0.3%) 300 (0.1%) 50 (0.0%) 47 (0.0%) 2,079 (0.9%)
Kent 13,460 +138 (+1.0%) +182 (+1.4%) 5,993 (44.5%) 4,982 (37.0%) 2,291 (17.0%) 48 (0.4%) 18 (0.1%) 2 (0.0%) 9 (0.1%) 117 (0.9%)
Montgomery 673,853 +10,542 (+1.6%) +8,405 (+1.3%) 410,540 (60.9%) 105,840 (15.7%) 148,284 (22.0%) 1,909 (0.3%) 984 (0.1%) 165 (0.0%) 172 (0.0%) 5,959 (0.9%)
Prince George's 602,548 +5,162 (+0.9%) +11,898 (+2.0%) 472,523 (78.4%) 39,582 (6.6%) 76,989 (12.8%) 1,068 (0.2%) 649 (0.1%) 139 (0.0%) 202 (0.0%) 11,396 (1.9%)
Queen Anne's 37,802 +373 (+1.0%) +1,142 (+3.1%) 11,086 (29.3%) 18,987 (50.2%) 7,213 (19.1%) 181 (0.5%) 39 (0.1%) 4 (0.0%) 7 (0.0%) 285 (0.8%)
Somerset 13,615 +155 (+1.2%) +211 (+1.6%) 5,683 (41.7%) 5,705 (41.9%) 2,060 (15.1%) 45 (0.3%) 18 (0.1%) 4 (0.0%) 7 (0.1%) 93 (0.7%)
St. Mary's 73,710 +1,102 (+1.5%) +2,036 (+2.8%) 26,366 (35.8%) 30,567 (41.5%) 15,677 (21.3%) 354 (0.5%) 93 (0.1%) 19 (0.0%) 29 (0.0%) 605 (0.8%)
Talbot 28,037 +290 (+1.0%) +594 (+2.2%) 10,729 (38.3%) 11,708 (41.8%) 5,187 (18.5%) 118 (0.4%) 27 (0.1%) 4 (0.0%) 10 (0.0%) 254 (0.9%)
Washington 99,206 +1,081 (+1.1%) +2,116 (+2.2%) 32,796 (33.1%) 44,155 (44.5%) 20,687 (20.9%) 485 (0.5%) 119 (0.1%) 25 (0.0%) 38 (0.0%) 901 (0.9%)
Wicomico 64,184 +767 (+1.2%) +1,352 (+2.2%) 27,107 (42.2%) 23,659 (36.9%) 12,343 (19.2%) 299 (0.5%) 87 (0.1%) 14 (0.0%) 31 (0.0%) 644 (1.0%)
Worcester 40,573 +517 (+1.3%) +1,183 (+3.0%) 14,049 (34.6%) 18,249 (45.0%) 7,612 (18.8%) 166 (0.4%) 49 (0.1%) 8 (0.0%) 7 (0.0%) 433 (1.1%)
Total 4,106,456 +47,994 (+1.2%) +74,953 (+1.9%) 2,258,099 (55.0%) 1,016,031 (24.7%) 769,201 (18.7%) 14,059 (0.3%) 5,613 (0.1%) 1,003 (0.0%) 1,469 (0.0%) 40,981 (1.0%)
Change from month before +25,479 (+1.1%) +9,462 (+0.9%) +11,548 (+1.5%) +1,110 (+8.6%) +436 (+8.4%) +137 (+15.8%) +642 (+77.6%) −820 (−2.0%)
Change from year before +54,951 (+2.5%) +1,985 (+0.2%) +15,826 (+2.1%) – – +648 (+182.5%) – −19,598 (−32.4%)