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St. Clair County, IL


Metropolitan Statistical Area: St. Louis, MO-IL
Designated Market Area: St. Louis, MO-IL
American Communities Project County Type (2023): Military Posts

Places in St. Clair County, IL     [Sort places by name]

 

Tracts in St. Clair County, IL

   



Click here to view demographic data for St. Clair County, IL

2022 population: 252,671   ( 17,385 from 2010 , 4,732 from 2020)
Land area: 657.7 square miles
Population density: 384.2 persons per square mile

2022 Census data
White:152,505 60.36% 10.2%
Black:76,90130.44% 6.1%
Indian:6260.25% 16.1%
Asian:4,0651.61% 18.7%
2+ races:6,6492.63% 27.2%
Hispanic:11,9254.72% 35.7%
Total non-White:100,16639.64% 0.0%

2020-2022 ComponentsNumberRate
Births:6,405 12.4
Deaths:6,94213.5
Net Migration: -4,456-8.7
Net Immigration: 1850.4
Change in White population:-17,353 -6.4
Change in Non-White pop.:-32 -0.0



Historical Presidential Election Results for St. Clair County, IL

Recent Trends
VotesΔ MarginSwing %
2020 vs. 2016 R +3,293 D +4,276 D + 2.9%
D +7,569
2020 vs. 2012 R +7,025 R +5,985 R + 5.7%
D +1,040
2020 vs. 2008 R +9,192 R +17,027 R + 13.8%
D -7,835
2016 vs. 2008 R +5,899 R +21,303 R + 16.7%
D -15,404
How to interpret this table


Click on the Year to view county-level data for that election.

YearTurnout WinnerRunner-Up OtherTotal Votes Diff
(St) 		Diff
(US) 		PSV
2020 67% Joe Biden (D) 68,325 53.2% Donald Trump* (R) 57,150 44.5% 3,030 [+] 2.4% 128,505 4 -2 2.12%
2016 61% Hillary Clinton (D) 60,756 50.0% Donald Trump (R) 53,857 44.4% 6,823 [+] 5.6% 121,436 6 -2 2.17%
2012 60% Barack Obama* (D) 67,285 56.2% Mitt Romney (R) 50,125 41.8% 2,417 [+] 2.0% 119,827 1 -5 2.28%
2008 64% Barack Obama (D) 76,160 60.4% John McCain (R) 47,958 38.0% 1,936 [+] 1.5% 126,054 1 -8 2.28%
2004 59% John Kerry (D) 62,410 55.1% George W. Bush* (R) 50,203 44.4% 576 [+] 0.5% 113,189 0 -6 2.15%
2000 54% Albert Gore, Jr. (D) 55,961 55.7% George W. Bush (R) 42,299 42.1% 2,133 [+] 2.1% 100,393 0 -6 2.12%
1996 51% Bill Clinton* (D) 53,405 56.6% Robert Dole (R) 33,066 35.0% 7,958 [+] 8.4% 94,429 -2 -6 2.19%
1992 57% Bill Clinton (D) 57,625 53.6% George Bush* (R) 31,951 29.7% 17,965 [+] 16.7% 107,541 -5 -8 2.13%
1988 52% Michael Dukakis (D) 55,465 57.0% George Bush (R) 41,439 42.6% 409 [+] 0.4% 97,313 -8 -11 2.13%
1984 56% Walter Mondale (D) 52,294 50.2% Ronald Reagan* (R) 51,046 49.0% 808 0.8% 104,148 -7 -10 2.16%
1980 55% Jimmy Carter* (D) 50,046 49.7% Ronald Reagan (R) 46,063 45.8% 4,564 [+] 4.5% 100,673 -4 -5 2.12%
1976 57% Jimmy Carter (D) 59,177 58.6% Gerald Ford* (R) 40,333 39.9% 1,555 [+] 1.5% 101,065 -10 -8 2.14%
1972 54% Richard Nixon* (R) 50,519 51.5% George McGovern (D) 46,636 47.5% 942 [+] 1.0% 98,097 -8 -9 2.08%
1968 61% Hubert Humphrey (D) 50,726 50.3% Richard Nixon (R) 34,442 34.1% 15,706 [+] 15.6% 100,874 -13 -9 2.18%
1964 63% Lyndon Johnson* (D) 74,005 72.4% Barry Goldwater (R) 28,226 27.6% 0 0.0% 102,231 -13 -11 2.17%
1960 70% John Kennedy (D) 67,367 61.4% Richard Nixon (R) 42,046 38.3% 338 0.3% 109,751 -11 -11 2.31%
1956 63% Adlai Stevenson (D) 55,295 56.9% Dwight Eisenhower* (R) 41,528 42.8% 283 0.3% 97,106 -17 -15 2.20%
1952 71% Adlai Stevenson (D) 60,311 60.0% Dwight Eisenhower (R) 39,713 39.5% 479 0.5% 100,503 -15 -16 2.24%
1948 67% Harry Truman* (D) 54,260 63.4% Thomas Dewey (R) 30,883 36.1% 474 [+] 0.6% 85,617 -13 -9 2.15%
1944 70% Franklin Roosevelt* (D) 48,325 58.8% Thomas Dewey (R) 33,557 40.8% 327 0.4% 82,209 -7 -5 2.04%
1940 83% Franklin Roosevelt* (D) 53,482 59.5% Wendell Willkie (R) 35,998 40.0% 411 0.5% 89,891 -8 -5 2.13%
1936 85% Franklin Roosevelt* (D) 54,238 64.8% Alf Landon (R) 26,684 31.9% 2,840 [+] 3.4% 83,762 -8 -5 2.12%
1932 75% Franklin Roosevelt (D) 47,305 65.2% Herbert Hoover* (R) 22,744 31.3% 2,522 [+] 3.5% 72,571 -11 -8 2.13%
1928 76% Al Smith (D) 36,374 53.5% Herbert Hoover (R) 31,026 45.6% 637 [+] 0.9% 68,037 -11 -13 2.19%
1924 61% Calvin Coolidge (R) 23,380 45.8% John Davis (D) 14,921 29.3% 12,693 [+] 24.9% 50,994 -13 -8 2.06%
1920 54% Warren Harding (R) 21,681 51.3% James Cox (D) 14,032 33.2% 6,518 [+] 15.4% 42,231 -16 -9 2.02%
1916 63% Woodrow Wilson* (D) 22,622 48.7% Charles Evans Hughes (R) 22,134 47.7% 1,650 [+] 3.6% 46,406 -5 2 2.12%
1912 37% Woodrow Wilson (D) 10,826 41.9% William Taft* (R) 8,156 31.5% 6,884 [+] 26.6% 25,866 9 8 2.26%
1908 42% William Taft (R) 12,619 48.7% William J. Bryan (D) 11,342 43.7% 1,973 [+] 7.6% 25,934 -6 -3 2.24%
1904 40% Theodore Roosevelt (R) 11,926 55.3% Alton Parker (D) 8,200 38.0% 1,435 [+] 6.7% 21,561 -3 -1 2.00%
1900 43% William J. Bryan (D) 9,837 49.0% William McKinley* (R) 9,764 48.6% 472 [+] 2.4% 20,073 -4 -3 1.77%
* incumbent         PSV: percent of state vote



2020 President, St. Clair County, IL
CandidateVotesPct
Joe Biden (D) 68,325 53.2%
Donald Trump* (R) 57,150 44.5%
Jo Jorgensen (Lbt) 1,615 1.3%
Other 1,415 1.1%
TOTAL 128,505
Turnout: 67% Diff (St): 4 Diff (US): -2


2016 President, St. Clair County, IL
CandidateVotesPct
Hillary Clinton (D) 60,756 50.0%
Donald Trump (R) 53,857 44.4%
Gary Johnson (Lbt) 4,181 3.4%
Jill Stein (Grn) 1,473 1.2%
Other 1,169 1.0%
TOTAL 121,436
Turnout: 61% Diff (St): 6 Diff (US): -2


2012 President, St. Clair County, IL
CandidateVotesPct
Barack Obama* (D) 67,285 56.2%
Mitt Romney (R) 50,125 41.8%
Gary Johnson (Lbt) 1,383 1.2%
Other 1,034 0.9%
TOTAL 119,827
Turnout: 60% Diff (St): 1 Diff (US): -5


2008 President, St. Clair County, IL
CandidateVotesPct
Barack Obama (D) 76,160 60.4%
John McCain (R) 47,958 38.0%
Ralph Nader (I) 732 0.6%
Bob Barr (Lbt) 421 0.3%
Other 783 0.6%
TOTAL 126,054
Turnout: 64% Diff (St): 1 Diff (US): -8


2004 President, St. Clair County, IL
CandidateVotesPct
George W. Bush* (R) 50,203 44.4%
John Kerry (D) 62,410 55.1%
Other 576 0.5%
TOTAL 113,189
Turnout: 59% Diff (St): 0 Diff (US): -6


2000 President, St. Clair County, IL
CandidateVotesPct
George W. Bush (R) 42,299 42.1%
Albert Gore, Jr. (D) 55,961 55.7%
Ralph Nader (Grn) 1,569 1.6%
Pat Buchanan (Ref) 283 0.3%
Other 281 0.3%
TOTAL 100,393
Turnout: 54% Diff (St): 0 Diff (US): -6


1996 President, St. Clair County, IL
CandidateVotesPct
Bill Clinton* (D) 53,405 56.6%
Robert Dole (R) 33,066 35.0%
Ross Perot (Ref) 7,027 7.4%
Harry Browne (Lbt) 521 0.6%
Other 410 0.4%
TOTAL 94,429
Turnout: 51% Diff (St): -2 Diff (US): -6


1992 President, St. Clair County, IL
CandidateVotesPct
Bill Clinton (D) 57,625 53.6%
George Bush* (R) 31,951 29.7%
Ross Perot (I) 17,592 16.4%
Other 373 0.3%
TOTAL 107,541
Turnout: 57% Diff (St): -5 Diff (US): -8


1988 President, St. Clair County, IL
CandidateVotesPct
George Bush (R) 41,439 42.6%
Michael Dukakis (D) 55,465 57.0%
Ron Paul (Lbt) 180 0.2%
Other 229 0.2%
TOTAL 97,313
Turnout: 52% Diff (St): -8 Diff (US): -11


1984 President, St. Clair County, IL
CandidateVotesPct
Ronald Reagan* (R) 51,046 49.0%
Walter Mondale (D) 52,294 50.2%
Other 808 0.8%
TOTAL 104,148
Turnout: 56% Diff (St): -7 Diff (US): -10


1980 President, St. Clair County, IL
CandidateVotesPct
Ronald Reagan (R) 46,063 45.8%
Jimmy Carter* (D) 50,046 49.7%
John Anderson (I) 3,879 3.9%
Edward Clark (Lbt) 447 0.4%
Other 238 0.2%
TOTAL 100,673
Turnout: 55% Diff (St): -4 Diff (US): -5


1976 President, St. Clair County, IL
CandidateVotesPct
Jimmy Carter (D) 59,177 58.6%
Gerald Ford* (R) 40,333 39.9%
Eugene McCarthy (I) 984 1.0%
Other 571 0.6%
TOTAL 101,065
Turnout: 57% Diff (St): -10 Diff (US): -8


1972 President, St. Clair County, IL
CandidateVotesPct
Richard Nixon* (R) 50,519 51.5%
George McGovern (D) 46,636 47.5%
Other 942 1.0%
TOTAL 98,097
Turnout: 54% Diff (St): -8 Diff (US): -9


1968 President, St. Clair County, IL
CandidateVotesPct
Richard Nixon (R) 34,442 34.1%
Hubert Humphrey (D) 50,726 50.3%
George Wallace (AIP) 15,260 15.1%
Other 446 0.4%
TOTAL 100,874
Turnout: 61% Diff (St): -13 Diff (US): -9


1964 President, St. Clair County, IL
CandidateVotesPct
Lyndon Johnson* (D) 74,005 72.4%
Barry Goldwater (R) 28,226 27.6%
TOTAL 102,231
Turnout: 63% Diff (St): -13 Diff (US): -11


1960 President, St. Clair County, IL
CandidateVotesPct
John Kennedy (D) 67,367 61.4%
Richard Nixon (R) 42,046 38.3%
Other 338 0.3%
TOTAL 109,751
Turnout: 70% Diff (St): -11 Diff (US): -11


1956 President, St. Clair County, IL
CandidateVotesPct
Dwight Eisenhower* (R) 41,528 42.8%
Adlai Stevenson (D) 55,295 56.9%
Other 283 0.3%
TOTAL 97,106
Turnout: 63% Diff (St): -17 Diff (US): -15


1952 President, St. Clair County, IL
CandidateVotesPct
Dwight Eisenhower (R) 39,713 39.5%
Adlai Stevenson (D) 60,311 60.0%
Other 479 0.5%
TOTAL 100,503
Turnout: 71% Diff (St): -15 Diff (US): -16


1948 President, St. Clair County, IL
CandidateVotesPct
Harry Truman* (D) 54,260 63.4%
Thomas Dewey (R) 30,883 36.1%
Other 474 0.6%
TOTAL 85,617
Turnout: 67% Diff (St): -13 Diff (US): -9


1944 President, St. Clair County, IL
CandidateVotesPct
Franklin Roosevelt* (D) 48,325 58.8%
Thomas Dewey (R) 33,557 40.8%
Other 327 0.4%
TOTAL 82,209
Turnout: 70% Diff (St): -7 Diff (US): -5


1940 President, St. Clair County, IL
CandidateVotesPct
Franklin Roosevelt* (D) 53,482 59.5%
Wendell Willkie (R) 35,998 40.0%
Other 411 0.5%
TOTAL 89,891
Turnout: 83% Diff (St): -8 Diff (US): -5


1936 President, St. Clair County, IL
CandidateVotesPct
Franklin Roosevelt* (D) 54,238 64.8%
Alf Landon (R) 26,684 31.9%
William Lemke (Union) 2,388 2.9%
Norman Thomas (Soc) 251 0.3%
Other 201 0.2%
TOTAL 83,762
Turnout: 85% Diff (St): -8 Diff (US): -5


1932 President, St. Clair County, IL
CandidateVotesPct
Franklin Roosevelt (D) 47,305 65.2%
Herbert Hoover* (R) 22,744 31.3%
Norman Thomas (Soc) 2,073 2.9%
Other 449 0.6%
TOTAL 72,571
Turnout: 75% Diff (St): -11 Diff (US): -8


1928 President, St. Clair County, IL
CandidateVotesPct
Herbert Hoover (R) 31,026 45.6%
Al Smith (D) 36,374 53.5%
Norman Thomas (Soc) 506 0.7%
Other 131 0.2%
TOTAL 68,037
Turnout: 76% Diff (St): -11 Diff (US): -13


1924 President, St. Clair County, IL
CandidateVotesPct
Calvin Coolidge (R) 23,380 45.8%
John Davis (D) 14,921 29.3%
Robert LaFollette (Prog) 12,468 24.4%
Other 225 0.4%
TOTAL 50,994
Turnout: 61% Diff (St): -13 Diff (US): -8


1920 President, St. Clair County, IL
CandidateVotesPct
Warren Harding (R) 21,681 51.3%
James Cox (D) 14,032 33.2%
Eugene Debs (Soc) 1,326 3.1%
Parley Christiansen (FL) 4,851 11.5%
Aaron Watkins (Proh) 188 0.4%
Other 153 0.4%
TOTAL 42,231
Turnout: 54% Diff (St): -16 Diff (US): -9


1916 President, St. Clair County, IL
CandidateVotesPct
Woodrow Wilson* (D) 22,622 48.7%
Charles Evans Hughes (R) 22,134 47.7%
Allan Benson (Soc) 1,152 2.5%
James Hanly (Proh) 423 0.9%
Other 75 0.2%
TOTAL 46,406
Turnout: 63% Diff (St): -5 Diff (US): 2


1912 President, St. Clair County, IL
CandidateVotesPct
Woodrow Wilson (D) 10,826 41.9%
Theodore Roosevelt (Prog) 4,064 15.7%
William Taft* (R) 8,156 31.5%
Eugene Debs (Soc) 2,498 9.7%
Eugene Chafin (Proh) 218 0.8%
Other 104 0.4%
TOTAL 25,866
Turnout: 37% Diff (St): 9 Diff (US): 8


1908 President, St. Clair County, IL
CandidateVotesPct
William Taft (R) 12,619 48.7%
William J. Bryan (D) 11,342 43.7%
Eugene Debs (Soc) 1,517 5.8%
Eugene Chafin (Proh) 344 1.3%
Thomas Hisgen (I) 9 0.0%
Other 103 0.4%
TOTAL 25,934
Turnout: 42% Diff (St): -6 Diff (US): -3


1904 President, St. Clair County, IL
CandidateVotesPct
Theodore Roosevelt (R) 11,926 55.3%
Alton Parker (D) 8,200 38.0%
Eugene Debs (Soc) 788 3.7%
Silas Swallow (Proh) 288 1.3%
Thomas Watson (Pop) 34 0.2%
Other 325 1.5%
TOTAL 21,561
Turnout: 40% Diff (St): -3 Diff (US): -1


1900 President, St. Clair County, IL
CandidateVotesPct
William McKinley* (R) 9,764 48.6%
William J. Bryan (D) 9,837 49.0%
John Woolley (Proh) 149 0.7%
Eugene Debs (Soc) 109 0.5%
Other 214 1.1%
TOTAL 20,073
Turnout: 43% Diff (St): -4 Diff (US): -3
* incumbent

Historical Statewide Election Results for St. Clair County, IL

Click on the Year to view county-level data for that election.

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2022 S3 46% Tammy Duckworth* (D) 47,634 53.8% Kathy Salvi (R) 39,335 44.4% 1,634 [+] 1.8% 88,603 3 2.16%
2022 G 46% J.B. Pritzker* (D) 45,071 50.8% Darren Bailey (R) 41,154 46.4% 2,548 [+] 2.9% 88,773 4 2.16%
2020 S2 66% Richard Durbin* (D) 66,801 52.6% Mark Curran (R) 55,898 44.0% 4,242 [+] 3.3% 126,941 5 2.13%
2018 G 50% J.B. Pritzker (D) 52,603 53.4% Bruce Rauner* (R) 40,524 41.2% 5,304 [+] 5.4% 98,431 2 2.16%
2016 S3 61% Tammy Duckworth (D) 68,709 57.2% Mark Kirk* (R) 45,998 38.3% 5,314 [+] 4.4% 120,021 -1 2.19%
2014 S2 38% Richard Durbin* (D) 38,813 50.7% Jim Oberweis (R) 34,877 45.5% 2,915 [+] 3.8% 76,605 3 2.13%
2014 G 38% Bruce Rauner (R) 39,438 51.7% Pat Quinn* (D) 33,474 43.9% 3,405 [+] 4.5% 76,317 1 2.10%
2010 S3 40% Alexi Giannoulias (D) 38,512 47.9% Mark Kirk (R) 38,185 47.5% 3,746 [+] 4.7% 80,443 -1 2.17%
2010 G 40% Pat Quinn* (D) 39,152 48.4% Bill Brady (R) 37,772 46.7% 4,003 [+] 4.9% 80,927 1 2.17%
2008 S2 61% Richard Durbin* (D) 77,920 64.5% Steve Sauerberg (R) 37,319 30.9% 5,580 [+] 4.6% 120,819 2 2.27%
2006 G 35% Rod Blagojevich* (D) 38,441 55.6% Judy Baar Topinka (R) 27,318 39.5% 3,389 [+] 4.9% 69,148 0 1.98%
2004 S3 58% Barack Obama (D) 74,447 67.1% Alan Keyes (R) 33,288 30.0% 3,188 [+] 2.9% 110,923 3 2.16%
2002 S2 35% Richard Durbin* (D) 39,848 60.7% Jim Durkin (R) 24,772 37.7% 1,069 [+] 1.6% 65,689 0 1.88%
2002 G 35% Rod Blagojevich (D) 38,164 57.3% Jim Ryan (R) 27,324 41.0% 1,110 [+] 1.7% 66,598 -4 1.88%
1998 S3 37% Peter Fitzgerald (R) 36,957 53.8% Carol Moseley-Braun* (D) 29,939 43.6% 1,784 [+] 2.6% 68,680 3 2.02%
1998 G 37% Glenn Poshard (D) 37,497 54.6% George Ryan (R) 30,486 44.4% 689 [+] 1.0% 68,672 -7 2.04%
1996 S2 50% Richard Durbin (D) 55,878 59.4% Al Salvi (R) 35,370 37.6% 2,759 [+] 2.9% 94,007 -3 2.21%
1994 G 34% Jim Edgar* (R) 38,601 60.8% Dawn Clark Netsch (D) 23,644 37.3% 1,197 [+] 1.9% 63,442 -3 2.04%
1992 S3 56% Carol Moseley-Braun (D) 61,508 58.9% Richard Williamson (R) 39,200 37.6% 3,662 [+] 3.5% 104,370 -5 2.11%
1990 S2 33% Paul Simon* (D) 42,698 68.2% Lynn Martin (R) 19,949 31.8% 0 0.0% 62,647 -3 1.93%
1990 G 34% Neil Hartigan (D) 36,453 56.8% Jim Edgar (R) 27,079 42.2% 693 [+] 1.1% 64,225 -9 1.97%
1986 S3 32% Alan Dixon* (D) 44,674 74.8% Judy Koehler (R) 14,568 24.4% 493 [+] 0.8% 59,735 -9 1.91%
1986 G 32% James Thompson* (R) 28,938 48.6% Adlai Stevenson III (Illinois Solidarity) 21,237 35.7% 9,352 [+] 15.7% 59,527 -4 1.89%
1984 S2 55% Paul Simon (D) 61,688 60.2% Charles Percy* (R) 39,426 38.5% 1,345 [+] 1.3% 102,459 -10 2.14%
1982 G 39% Adlai Stevenson III (D) 39,033 54.9% James Thompson* (R) 31,418 44.2% 654 [+] 0.9% 71,105 -5 1.94%
1980 S3 54% Alan Dixon (D) 57,615 58.5% David O'Neal (R) 40,176 40.8% 626 [+] 0.6% 98,417 -2 2.15%
1978 S2 35% Alex Seith (D) 37,040 60.7% Charles Percy* (R) 23,074 37.8% 935 [+] 1.5% 61,049 -16 1.92%
1978 G 35% Michael Bakalis (D) 31,250 51.0% James Thompson* (R) 29,255 47.8% 756 [+] 1.2% 61,261 -11 1.94%
1976 G 55% James Thompson (R) 50,907 51.9% Michael Howlitt (D) 46,675 47.6% 497 [+] 0.5% 98,079 -13 2.11%
1974 S3 35% Adlai Stevenson III* (D) 45,439 71.9% George Burditt (R) 17,460 27.6% 332 [+] 0.5% 63,231 -10 2.17%
1972 S2 52% Charles Percy* (R) 51,708 54.9% Roman Pucinski (D) 41,549 44.1% 857 [+] 0.9% 94,114 -7 2.04%
1972 G 53% Daniel Walker (D) 56,720 58.7% Richard Ogilvie* (R) 39,405 40.8% 514 [+] 0.5% 96,639 -8 2.07%
1970 S3 43% Adlai Stevenson III (D) 44,025 59.8% Ralph Smith* (R) 29,043 39.5% 539 [+] 0.7% 73,607 -3 2.05%
1968 S3 56% William Clark (D) 48,472 51.9% Everett Dirksen* (R) 44,071 47.2% 814 [+] 0.9% 93,357 -6 2.10%
1968 G 58% Samuel Shapiro* (D) 52,037 54.2% Richard Ogilvie (R) 43,152 45.0% 775 [+] 0.8% 95,964 -6 2.13%
1966 S2 44% Paul Douglas* (D) 38,937 54.6% Charles Percy (R) 32,375 45.4% 13 [+] 0.0% 71,325 -10 1.87%
1964 G 62% Otto Kerner* (D) 65,794 65.8% Charles Percy (R) 34,250 34.2% 0 0.0% 100,044 -14 2.15%
1962 S3 44% Sidney Yates (D) 42,632 61.5% Everett Dirksen* (R) 26,694 38.5% 0 0.0% 69,326 -14 1.87%
1960 S2 66% Paul Douglas* (D) 69,756 67.5% Samuel Witwer (R) 33,404 32.3% 226 [+] 0.2% 103,386 -13 2.23%
1960 G 68% Otto Kerner (D) 63,795 60.3% William Stratton* (R) 41,633 39.4% 319 [+] 0.3% 105,747 -5 2.26%
*: incumbent               +: ran on additional party lines               Type: G: Governor; S1,S2,S3: Senate Class 1, 2 or 3
italics: special election           RO: runoff election           PSV: percent of state vote


Historical U.S. House Election Results for St. Clair County, IL

Click on the District to view county-level data for that election (where available).

DateDistrictWinnerRunner-Up OtherTotal Votes
2022-11-08 IL12Mike Bost* (R) 24,193 66.1% Chip Markel (D) 12,383 33.9% 0 0.0% 36,576
2022-11-08 IL13Nikki Budzinski (D) 33,947 65.3% Regan Deering (R) 18,019 34.7% 7 0.0% 51,973
County Total for 2022-11-08:   88,549
2020-11-03 IL12Raymond Lenzi (D) 62,682 50.4% Mike Bost* (R) 61,723 49.6% 0 0.0% 124,405
County Total for 2020-11-03:   124,405
2018-11-06 IL12Brendan Kelly (D) 54,108 54.7% Mike Bost* (R) 41,387 41.9% 3,355 3.4% 98,850
County Total for 2018-11-06:   98,850
2016-11-08 IL12C.J. Baricevic (D) 58,719 49.1% Mike Bost* (R) 54,031 45.2% 6,778 5.7% 119,528
County Total for 2016-11-08:   119,528
2014-11-04 IL12William Enyart* (D) 38,426 50.2% Mike Bost (R) 34,024 44.4% 4,131 5.4% 76,581
County Total for 2014-11-04:   76,581
2012-11-06 IL12William Enyart (D) 67,081 57.2% Jason Plummer (R) 45,496 38.8% 4,742 4.0% 117,319
County Total for 2012-11-06:   117,319
2010-11-02 IL12Jerry Costello* (D) 50,361 62.3% Teri Davis-Newman (R) 28,183 34.9% 2,259 2.8% 80,803
County Total for 2010-11-02:   80,803
2008-11-04 IL12Jerry Costello* (D) 90,645 74.0% Timmy Richardson (R) 28,134 23.0% 3,656 3.0% 122,435
County Total for 2008-11-04:   122,435
2006-11-07 IL12Jerry Costello* (D) 57,367 100.0% 0 0.0% 57,367
County Total for 2006-11-07:   57,367
2004-11-02 IL12Jerry Costello* (D) 78,636 70.6% Erin Zweigert (R) 30,866 27.7% 1,802 1.6% 111,304
County Total for 2004-11-02:   111,304
2002-11-05 IL12Jerry Costello* (D) 46,288 68.9% David Sadler (R) 20,882 31.1% 0 0.0% 67,170
County Total for 2002-11-05:   67,170
2000-11-07 IL12Jerry Costello* (D) 81,974 100.0% 24 0.0% 81,998
County Total for 2000-11-07:   81,998
1998-11-03 IL12Jerry Costello* (D) 38,439 55.0% William Price (R) 31,489 45.0% 0 0.0% 69,928
County Total for 1998-11-03:   69,928
1996-11-05 IL12Jerry Costello* (D) 66,087 71.8% Shapley Hunter (R) 24,426 26.5% 1,563 1.7% 92,076
County Total for 1996-11-05:   92,076
1994-11-08 IL12Jerry Costello* (D) 43,342 68.8% Jan Morris (R) 19,669 31.2% 0 0.0% 63,011
County Total for 1994-11-08:   63,011
1992-11-03 IL12Jerry Costello* (D) 75,911 73.1% Mike Starr (R) 27,914 26.9% 0 0.0% 103,825
County Total for 1992-11-03:   103,825
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for St. Clair County, IL

Party registration is not used in this state, however as of 2022 registrations in St. Clair County, IL were estimated to be 19% Republican and 45% Democrat.

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2022 188,361 0 0.0% 0 0.0% 188,361 100.0% n/a n/a 98%
2020 193,473 0 0.0% 0 0.0% 193,473 100.0% n/a n/a 100%
2018 192,484 0 0.0% 0 0.0% 192,484 100.0% n/a n/a 99%
2016 189,902 0 0.0% 0 0.0% 189,902 100.0% n/a n/a 97%
2012 188,420 0 0.0% 0 0.0% 188,420 100.0% n/a n/a 94%
2010 194,486 0 0.0% 0 0.0% 194,486 100.0% n/a n/a 97%
2008 201,095 0 0.0% 0 0.0% 201,095 100.0% n/a n/a 101%
2006 189,124 0 0.0% 0 0.0% 189,124 100.0% n/a n/a 97%
2004 192,432 0 0.0% 0 0.0% 192,432 100.0% n/a n/a 100%
2000 164,993 0 0.0% 0 0.0% 164,993 100.0% n/a n/a 89%
1994 139,478 0 0.0% 0 0.0% 139,478 100.0% n/a n/a 75%
1986 147,078 0 0.0% 0 0.0% 147,078 100.0% n/a n/a 79%
VAPOP% is the estimated percentage of voting age population that is registered.
Registration data may include "inactive" voters.   Data for each year pertains to the November elections.