Registered Voters by County

as of 2012-04

Participation among current voters (voter file)

Source: State Board of Elections report for 2012-04 (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.
Democratic minus Republican share of active voters, as of April 2012
Allegany: Republicans +10 points Anne Arundel: Democrats +7 points Baltimore City: Democrats +70 points Baltimore County: Democrats +32 points Calvert: even Caroline: Republicans +2 points Carroll: Republicans +22 points Cecil: even Charles: Democrats +30 points Dorchester: Democrats +15 points Frederick: Republicans +5 points Garrett: Republicans +36 points Harford: Republicans +2 points Howard: Democrats +17 points Kent: Democrats +12 points Montgomery: Democrats +35 points Prince George's: Democrats +69 points Queen Anne's: Republicans +12 points Somerset: Democrats +18 points St. Mary's: even Talbot: Republicans +5 points Washington: Republicans +8 points Wicomico: Democrats +8 points Worcester: Democrats +3 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 April 2012
Allegany: 13.4% Anne Arundel: 19.6% Baltimore City: 11.4% Baltimore County: 14.0% Calvert: 18.1% Caroline: 16.7% Carroll: 16.5% Cecil: 19.5% Charles: 15.4% Dorchester: 11.6% Frederick: 20.3% Garrett: 10.5% Harford: 15.9% Howard: 20.1% Kent: 13.2% Montgomery: 22.1% Prince George's: 9.2% Queen Anne's: 15.5% Somerset: 12.2% St. Mary's: 18.1% Talbot: 15.2% Washington: 18.0% Wicomico: 15.6% Worcester: 15.8%
  • under 12%
  • 12 to 15%
  • 15 to 18%
  • 18 to 21%
  • 21% or more
Change over a year in active voters, April 2011 to April 2012
Allegany: -0.7% Anne Arundel: +2.5% Baltimore City: +0.7% Baltimore County: +3.5% Calvert: +3.2% Caroline: +2.4% Carroll: +3.1% Cecil: +0.5% Charles: +0.5% Dorchester: -0.2% Frederick: +4.2% Garrett: +3.0% Harford: +2.3% Howard: +3.7% Kent: +1.9% Montgomery: +1.3% Prince George's: +3.2% Queen Anne's: +2.4% Somerset: -0.6% St. Mary's: +3.4% Talbot: -1.5% Washington: +3.0% Wicomico: +0.8% Worcester: +1.5%
  • 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 OTH
Allegany 41,979 +45 (+0.1%) −309 (−0.7%) 15,785 (37.6%) 19,916 (47.4%) 5,623 (13.4%) 133 (0.3%) 121 (0.3%) 401 (1.0%)
Anne Arundel 336,993 +2,191 (+0.7%) +8,102 (+2.5%) 145,246 (43.1%) 123,341 (36.6%) 66,028 (19.6%) 1,275 (0.4%) 845 (0.3%) 258 (0.1%)
Baltimore City 370,379 +12 (0.0%) +2,495 (+0.7%) 292,191 (78.9%) 32,245 (8.7%) 42,348 (11.4%) 771 (0.2%) 1,368 (0.4%) 1,456 (0.4%)
Baltimore County 492,288 +1,458 (+0.3%) +16,590 (+3.5%) 286,217 (58.1%) 128,991 (26.2%) 68,746 (14.0%) 1,623 (0.3%) 1,334 (0.3%) 5,377 (1.1%)
Calvert 56,550 +178 (+0.3%) +1,777 (+3.2%) 22,672 (40.1%) 22,823 (40.4%) 10,252 (18.1%) 165 (0.3%) 122 (0.2%) 516 (0.9%)
Caroline 17,770 +109 (+0.6%) +411 (+2.4%) 7,085 (39.9%) 7,514 (42.3%) 2,960 (16.7%) 51 (0.3%) 34 (0.2%) 126 (0.7%)
Carroll 107,441 +458 (+0.4%) +3,200 (+3.1%) 32,510 (30.3%) 55,689 (51.8%) 17,757 (16.5%) 333 (0.3%) 268 (0.2%) 884 (0.8%)
Cecil 59,833 +233 (+0.4%) +282 (+0.5%) 23,548 (39.4%) 23,467 (39.2%) 11,686 (19.5%) 222 (0.4%) 142 (0.2%) 768 (1.3%)
Charles 92,891 +591 (+0.6%) +437 (+0.5%) 52,712 (56.7%) 24,926 (26.8%) 14,350 (15.4%) 207 (0.2%) 136 (0.1%) 560 (0.6%)
Dorchester 19,321 −146 (−0.7%) −32 (−0.2%) 9,930 (51.4%) 6,942 (35.9%) 2,242 (11.6%) 50 (0.3%) 25 (0.1%) 132 (0.7%)
Frederick 140,969 +644 (+0.5%) +5,689 (+4.2%) 52,083 (36.9%) 59,252 (42.0%) 28,672 (20.3%) 514 (0.4%) 377 (0.3%) 71 (0.1%)
Garrett 18,535 +3 (0.0%) +539 (+3.0%) 4,817 (26.0%) 11,495 (62.0%) 1,945 (10.5%) 47 (0.3%) 39 (0.2%) 192 (1.0%)
Harford 152,982 +188 (+0.1%) +3,484 (+2.3%) 61,622 (40.3%) 65,241 (42.6%) 24,380 (15.9%) 570 (0.4%) 307 (0.2%) 862 (0.6%)
Howard 183,521 −257 (−0.1%) +6,532 (+3.7%) 87,359 (47.6%) 56,223 (30.6%) 36,962 (20.1%) 639 (0.3%) 459 (0.3%) 1,879 (1.0%)
Kent 12,244 +40 (+0.3%) +223 (+1.9%) 5,931 (48.4%) 4,486 (36.6%) 1,611 (13.2%) 39 (0.3%) 37 (0.3%) 140 (1.1%)
Montgomery 582,607 +614 (+0.1%) +7,430 (+1.3%) 327,392 (56.2%) 122,512 (21.0%) 128,597 (22.1%) 1,609 (0.3%) 1,475 (0.3%) 1,022 (0.2%)
Prince George's 539,352 +2,899 (+0.5%) +16,717 (+3.2%) 419,605 (77.8%) 47,218 (8.8%) 49,878 (9.2%) 842 (0.2%) 771 (0.1%) 21,038 (3.9%)
Queen Anne's 31,029 −115 (−0.4%) +739 (+2.4%) 11,108 (35.8%) 14,772 (47.6%) 4,797 (15.5%) 91 (0.3%) 58 (0.2%) 203 (0.7%)
Somerset 13,132 −46 (−0.3%) −78 (−0.6%) 6,862 (52.3%) 4,508 (34.3%) 1,598 (12.2%) 29 (0.2%) 19 (0.1%) 116 (0.9%)
St. Mary's 60,920 +303 (+0.5%) +2,012 (+3.4%) 24,407 (40.1%) 24,683 (40.5%) 11,000 (18.1%) 216 (0.4%) 150 (0.2%) 464 (0.8%)
Talbot 25,010 +60 (+0.2%) −383 (−1.5%) 9,811 (39.2%) 10,962 (43.8%) 3,802 (15.2%) 91 (0.4%) 52 (0.2%) 292 (1.2%)
Washington 84,618 +330 (+0.4%) +2,454 (+3.0%) 31,028 (36.7%) 37,654 (44.5%) 15,254 (18.0%) 275 (0.3%) 243 (0.3%) 164 (0.2%)
Wicomico 54,545 +228 (+0.4%) +408 (+0.8%) 24,826 (45.5%) 20,234 (37.1%) 8,528 (15.6%) 167 (0.3%) 109 (0.2%) 681 (1.2%)
Worcester 35,098 −211 (−0.6%) +517 (+1.5%) 14,965 (42.6%) 14,016 (39.9%) 5,546 (15.8%) 106 (0.3%) 66 (0.2%) 399 (1.1%)
Total 3,530,007 +9,809 (+0.3%) +79,236 (+2.3%) 1,969,712 (55.8%) 939,110 (26.6%) 564,562 (16.0%) 10,065 (0.3%) 8,557 (0.2%) 38,001 (1.1%)
Change from month before +4,644 (+0.2%) +3,876 (+0.4%) +1,595 (+0.3%) +95 (+1.0%) −12 (−0.1%) −389 (−1.0%)
Change from year before +25,779 (+1.3%) +21,114 (+2.3%) +32,216 (+6.1%) +793 (+8.6%) +209 (+2.5%) −147 (−0.4%)