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Warren County, OH


Metropolitan Statistical Area: Cincinnati, OH-IN-KY
Designated Market Area: Cincinnati, OH-IN-KY
USDA County Type (2015): Retirement Destination
American Communities Project County Type (2023): Exurbs

Places in Warren County, OH     [Sort places by name]

 

Tracts in Warren County, OH

   



Click here to view demographic data for Warren County, OH

2022 population: 249,778   ( 37,085 from 2010 , 7,440 from 2020)
Land area: 401.4 square miles
Population density: 622.2 persons per square mile

2022 Census data
White:208,477 83.46% 10.1%
Black:9,1413.66% 33.7%
Indian:3310.13% 14.5%
Asian:18,4767.40% 121.2%
2+ races:4,8771.95% 71.1%
Hispanic:8,4763.39% 77.2%
Total non-White:41,30116.54% 76.6%

2020-2022 ComponentsNumberRate
Births:5,406 11.2
Deaths:5,13710.6
Net Migration: 6,16212.7
Net Immigration: 1,0692.2
Change in White population:19,172 9.0
Change in Non-White pop.:17,913 8.4



Historical Presidential Election Results for Warren County, OH

Recent Trends
VotesΔ MarginSwing %
2024 vs. 2020 R +3,144 R +2,085 R + 0.6%
D +1,059
2024 vs. 2016 R +13,489 R +91 D + 7.6%
D +13,398
2020 vs. 2016 R +10,345 D +1,994 D + 8.2%
D +12,339
2024 vs. 2012 R +14,568 R +349 D + 8.1%
D +14,219
2016 vs. 2008 R +5,952 R +5,620 R + 3.0%
D +332
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
2024 75% Donald Trump (R) 91,132 64.7% Kamala Harris (D) 47,128 33.5% 2,499 [+] 1.8% 140,759 10 15 2.43%
2020 72% Donald Trump* (R) 87,988 64.5% Joe Biden (D) 46,069 33.8% 2,384 [+] 1.7% 136,441 11 18 2.30%
2016 69% Donald Trump (R) 77,643 65.6% Hillary Clinton (D) 33,730 28.5% 6,936 [+] 5.9% 118,309 14 20 2.14%
2012 70% Mitt Romney (R) 76,564 68.9% Barack Obama* (D) 32,909 29.6% 1,724 [+] 1.6% 111,197 21 22 1.99%
2008 73% John McCain (R) 71,691 67.4% Barack Obama (D) 33,398 31.4% 1,337 [+] 1.3% 106,426 21 22 1.86%
2004 72% George W. Bush* (R) 68,037 72.1% John Kerry (D) 26,044 27.6% 341 [+] 0.4% 94,422 21 21 1.68%
2000 60% George W. Bush (R) 48,318 69.9% Albert Gore, Jr. (D) 19,142 27.7% 1,618 [+] 2.3% 69,078 20 22 1.47%
1996 54% Robert Dole (R) 33,210 59.9% Bill Clinton* (D) 17,089 30.8% 5,110 [+] 9.2% 55,409 19 19 1.22%
1992 59% George Bush* (R) 27,998 53.0% Bill Clinton (D) 13,542 25.6% 11,262 [+] 21.3% 52,802 15 16 1.07%
1988 53% George Bush (R) 31,419 73.4% Michael Dukakis (D) 11,145 26.0% 254 [+] 0.6% 42,818 18 20 0.97%
1984 53% Ronald Reagan* (R) 29,848 76.4% Walter Mondale (D) 9,031 23.1% 191 0.5% 39,070 17 18 0.86%
1980 52% Ronald Reagan (R) 22,430 63.1% Jimmy Carter* (D) 11,306 31.8% 1,786 [+] 5.0% 35,522 12 12 0.83%
1976 50% Gerald Ford* (R) 16,115 53.8% Jimmy Carter (D) 13,349 44.6% 471 [+] 1.6% 29,935 5 6 0.73%
1972 50% Richard Nixon* (R) 20,210 72.4% George McGovern (D) 6,941 24.9% 746 [+] 2.7% 27,897 13 12 0.68%
1968 55% Richard Nixon (R) 12,663 48.7% Hubert Humphrey (D) 6,756 26.0% 6,595 [+] 25.4% 26,014 3 5 0.66%
1964 55% Lyndon Johnson* (D) 12,406 53.0% Barry Goldwater (R) 10,982 47.0% 0 0.0% 23,388 10 8 0.59%
1960 59% Richard Nixon (R) 14,505 64.6% John Kennedy (D) 7,945 35.4% 0 0.0% 22,450 11 15 0.54%
1956 60% Dwight Eisenhower* (R) 13,673 65.5% Adlai Stevenson (D) 7,193 34.5% 0 0.0% 20,866 4 8 0.56%
1952 66% Dwight Eisenhower (R) 11,529 62.0% Adlai Stevenson (D) 7,054 38.0% 0 0.0% 18,583 5 7 0.50%
1948 57% Thomas Dewey (R) 7,584 56.6% Harry Truman* (D) 5,793 43.2% 32 [+] 0.2% 13,409 7 11 0.46%
1944 68% Thomas Dewey (R) 8,598 59.9% Franklin Roosevelt* (D) 5,765 40.1% 0 0.0% 14,363 10 14 0.46%
1940 82% Wendell Willkie (R) 8,722 55.8% Franklin Roosevelt* (D) 6,895 44.2% 0 0.0% 15,617 8 11 0.47%
1936 85% Alf Landon (R) 7,359 50.0% Franklin Roosevelt* (D) 7,209 49.0% 139 [+] 0.9% 14,707 13 14 0.49%
1932 79% Herbert Hoover* (R) 7,421 56.4% Franklin Roosevelt (D) 5,547 42.1% 197 [+] 1.5% 13,165 9 17 0.50%
1928 70% Herbert Hoover (R) 8,708 77.6% Al Smith (D) 2,455 21.9% 56 [+] 0.5% 11,219 13 19 0.45%
1924 62% Calvin Coolidge (R) 6,729 69.0% John Davis (D) 2,406 24.7% 614 [+] 6.3% 9,749 11 15 0.48%
1920 75% Warren Harding (R) 7,464 65.0% James Cox (D) 3,956 34.4% 71 [+] 0.6% 11,491 6 5 0.57%
1916 45% Charles Evans Hughes (R) 3,610 54.4% Woodrow Wilson* (D) 2,937 44.2% 95 [+] 1.4% 6,642 10 8 0.57%
1912 43% William Taft* (R) 2,788 44.5% Woodrow Wilson (D) 2,101 33.5% 1,378 [+] 22.0% 6,267 18 21 0.60%
1908 51% William Taft (R) 4,233 60.5% William J. Bryan (D) 2,656 38.0% 107 [+] 1.5% 6,996 9 9 0.62%
1904 47% Theodore Roosevelt (R) 4,381 67.1% Alton Parker (D) 2,012 30.8% 135 [+] 2.1% 6,528 7 11 0.65%
1900 50% William McKinley* (R) 4,311 60.6% William J. Bryan (D) 2,675 37.6% 129 [+] 1.8% 7,115 8 9 0.68%
* incumbent         PSV: percent of state vote



2020 President, Warren County, OH
CandidateVotesPct
Joe Biden (D) 46,069 33.8%
Donald Trump* (R) 87,988 64.5%
Jo Jorgensen (Lbt) 1,747 1.3%
Other 637 0.5%
TOTAL 136,441
Turnout: 72% Diff (St): 11 Diff (US): 18


2016 President, Warren County, OH
CandidateVotesPct
Hillary Clinton (D) 33,730 28.5%
Donald Trump (R) 77,643 65.6%
Gary Johnson (Lbt) 4,335 3.7%
Jill Stein (Grn) 715 0.6%
Evan McMullin (I) 434 0.4%
Other 1,452 1.2%
TOTAL 118,309
Turnout: 69% Diff (St): 14 Diff (US): 20


2012 President, Warren County, OH
CandidateVotesPct
Barack Obama* (D) 32,909 29.6%
Mitt Romney (R) 76,564 68.9%
Gary Johnson (Lbt) 1,011 0.9%
Other 713 0.6%
TOTAL 111,197
Turnout: 70% Diff (St): 21 Diff (US): 22


2008 President, Warren County, OH
CandidateVotesPct
Barack Obama (D) 33,398 31.4%
John McCain (R) 71,691 67.4%
Ralph Nader (I) 488 0.5%
Bob Barr (Lbt) 352 0.3%
Other 497 0.5%
TOTAL 106,426
Turnout: 73% Diff (St): 21 Diff (US): 22


2004 President, Warren County, OH
CandidateVotesPct
George W. Bush* (R) 68,037 72.1%
John Kerry (D) 26,044 27.6%
Other 341 0.4%
TOTAL 94,422
Turnout: 72% Diff (St): 21 Diff (US): 21


2000 President, Warren County, OH
CandidateVotesPct
George W. Bush (R) 48,318 69.9%
Albert Gore, Jr. (D) 19,142 27.7%
Ralph Nader (Grn) 1,067 1.5%
Pat Buchanan (Ref) 207 0.3%
Other 344 0.5%
TOTAL 69,078
Turnout: 60% Diff (St): 20 Diff (US): 22


1996 President, Warren County, OH
CandidateVotesPct
Bill Clinton* (D) 17,089 30.8%
Robert Dole (R) 33,210 59.9%
Ross Perot (Ref) 4,689 8.5%
Harry Browne (Lbt) 163 0.3%
Other 258 0.5%
TOTAL 55,409
Turnout: 54% Diff (St): 19 Diff (US): 19


1992 President, Warren County, OH
CandidateVotesPct
Bill Clinton (D) 13,542 25.6%
George Bush* (R) 27,998 53.0%
Ross Perot (I) 11,115 21.1%
Other 147 0.3%
TOTAL 52,802
Turnout: 59% Diff (St): 15 Diff (US): 16


1988 President, Warren County, OH
CandidateVotesPct
George Bush (R) 31,419 73.4%
Michael Dukakis (D) 11,145 26.0%
Ron Paul (Lbt) 102 0.2%
Other 152 0.4%
TOTAL 42,818
Turnout: 53% Diff (St): 18 Diff (US): 20


1984 President, Warren County, OH
CandidateVotesPct
Ronald Reagan* (R) 29,848 76.4%
Walter Mondale (D) 9,031 23.1%
Other 191 0.5%
TOTAL 39,070
Turnout: 53% Diff (St): 17 Diff (US): 18


1980 President, Warren County, OH
CandidateVotesPct
Ronald Reagan (R) 22,430 63.1%
Jimmy Carter* (D) 11,306 31.8%
John Anderson (I) 1,348 3.8%
Edward Clark (Lbt) 332 0.9%
Other 106 0.3%
TOTAL 35,522
Turnout: 52% Diff (St): 12 Diff (US): 12


1976 President, Warren County, OH
CandidateVotesPct
Jimmy Carter (D) 13,349 44.6%
Gerald Ford* (R) 16,115 53.8%
Eugene McCarthy (I) 235 0.8%
Other 236 0.8%
TOTAL 29,935
Turnout: 50% Diff (St): 5 Diff (US): 6


1972 President, Warren County, OH
CandidateVotesPct
Richard Nixon* (R) 20,210 72.4%
George McGovern (D) 6,941 24.9%
John Schmitz (Amer) 720 2.6%
Other 26 0.1%
TOTAL 27,897
Turnout: 50% Diff (St): 13 Diff (US): 12


1968 President, Warren County, OH
CandidateVotesPct
Richard Nixon (R) 12,663 48.7%
Hubert Humphrey (D) 6,756 26.0%
George Wallace (AIP) 6,595 25.4%
TOTAL 26,014
Turnout: 55% Diff (St): 3 Diff (US): 5


1964 President, Warren County, OH
CandidateVotesPct
Lyndon Johnson* (D) 12,406 53.0%
Barry Goldwater (R) 10,982 47.0%
TOTAL 23,388
Turnout: 55% Diff (St): 10 Diff (US): 8


1956 President, Warren County, OH
CandidateVotesPct
Dwight Eisenhower* (R) 13,673 65.5%
Adlai Stevenson (D) 7,193 34.5%
TOTAL 20,866
Turnout: 60% Diff (St): 4 Diff (US): 8


1952 President, Warren County, OH
CandidateVotesPct
Dwight Eisenhower (R) 11,529 62.0%
Adlai Stevenson (D) 7,054 38.0%
TOTAL 18,583
Turnout: 66% Diff (St): 5 Diff (US): 7


1948 President, Warren County, OH
CandidateVotesPct
Harry Truman* (D) 5,793 43.2%
Thomas Dewey (R) 7,584 56.6%
Henry Wallace (Prog) 32 0.2%
TOTAL 13,409
Turnout: 57% Diff (St): 7 Diff (US): 11


1936 President, Warren County, OH
CandidateVotesPct
Franklin Roosevelt* (D) 7,209 49.0%
Alf Landon (R) 7,359 50.0%
William Lemke (Union) 134 0.9%
Other 5 0.0%
TOTAL 14,707
Turnout: 85% Diff (St): 13 Diff (US): 14


1932 President, Warren County, OH
CandidateVotesPct
Franklin Roosevelt (D) 5,547 42.1%
Herbert Hoover* (R) 7,421 56.4%
Norman Thomas (Soc) 142 1.1%
Other 55 0.4%
TOTAL 13,165
Turnout: 79% Diff (St): 9 Diff (US): 17


1928 President, Warren County, OH
CandidateVotesPct
Herbert Hoover (R) 8,708 77.6%
Al Smith (D) 2,455 21.9%
Norman Thomas (Soc) 24 0.2%
Other 32 0.3%
TOTAL 11,219
Turnout: 70% Diff (St): 13 Diff (US): 19


1924 President, Warren County, OH
CandidateVotesPct
Calvin Coolidge (R) 6,729 69.0%
John Davis (D) 2,406 24.7%
Robert LaFollette (Prog) 609 6.2%
Other 5 0.1%
TOTAL 9,749
Turnout: 62% Diff (St): 11 Diff (US): 15


1920 President, Warren County, OH
CandidateVotesPct
Warren Harding (R) 7,464 65.0%
James Cox (D) 3,956 34.4%
Eugene Debs (Soc) 68 0.6%
Other 3 0.0%
TOTAL 11,491
Turnout: 75% Diff (St): 6 Diff (US): 5


1916 President, Warren County, OH
CandidateVotesPct
Woodrow Wilson* (D) 2,937 44.2%
Charles Evans Hughes (R) 3,610 54.4%
Allan Benson (Soc) 60 0.9%
James Hanly (Proh) 35 0.5%
TOTAL 6,642
Turnout: 45% Diff (St): 10 Diff (US): 8


1912 President, Warren County, OH
CandidateVotesPct
Woodrow Wilson (D) 2,101 33.5%
Theodore Roosevelt (Prog) 1,100 17.6%
William Taft* (R) 2,788 44.5%
Eugene Debs (Soc) 207 3.3%
Eugene Chafin (Proh) 61 1.0%
Other 10 0.2%
TOTAL 6,267
Turnout: 43% Diff (St): 18 Diff (US): 21


1908 President, Warren County, OH
CandidateVotesPct
William Taft (R) 4,233 60.5%
William J. Bryan (D) 2,656 38.0%
Eugene Debs (Soc) 50 0.7%
Eugene Chafin (Proh) 53 0.8%
Thomas Hisgen (I) 1 0.0%
Other 3 0.0%
TOTAL 6,996
Turnout: 51% Diff (St): 9 Diff (US): 9


1904 President, Warren County, OH
CandidateVotesPct
Theodore Roosevelt (R) 4,381 67.1%
Alton Parker (D) 2,012 30.8%
Eugene Debs (Soc) 35 0.5%
Silas Swallow (Proh) 94 1.4%
Thomas Watson (Pop) 3 0.0%
Other 3 0.0%
TOTAL 6,528
Turnout: 47% Diff (St): 7 Diff (US): 11


1900 President, Warren County, OH
CandidateVotesPct
William McKinley* (R) 4,311 60.6%
William J. Bryan (D) 2,675 37.6%
Other 129 1.8%
TOTAL 7,115
Turnout: 50% Diff (St): 8 Diff (US): 9
* incumbent

Historical Statewide Election Results for Warren County, OH

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

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2024 S1 74% Bernie Moreno (R) 84,796 61.1% Sherrod Brown* (D) 49,350 35.5% 4,726 [+] 3.4% 138,872 11 2.43%
2022 S3 54% J.D. Vance (R) 65,370 64.5% Tim Ryan (D) 35,970 35.5% 32 [+] 0.0% 101,372 11 2.45%
2022 G 54% Mike DeWine* (R) 74,345 73.2% Nan Whaley (D) 27,070 26.6% 203 [+] 0.2% 101,618 11 2.46%
2018 S1 56% Jim Renacci (R) 63,757 64.0% Sherrod Brown* (D) 35,815 36.0% 20 [+] 0.0% 99,592 17 2.26%
2018 G 56% Mike DeWine (R) 66,190 66.5% Richard Cordray (D) 30,720 30.9% 2,611 [+] 2.6% 99,521 16 2.25%
2016 S3 67% Rob Portman* (R) 85,848 74.9% Ted Strickland (D) 23,827 20.8% 4,982 [+] 4.3% 114,657 17 2.13%
2014 G 36% John Kasich* (R) 46,167 78.4% Edward FitzGerald (D) 11,427 19.4% 1,279 [+] 2.2% 58,873 15 1.93%
2012 S1 68% Josh Mandel (R) 70,755 64.9% Sherrod Brown* (D) 33,787 31.0% 4,528 [+] 4.2% 109,070 20 2.00%
2010 S3 51% Rob Portman (R) 60,795 76.7% Lee Fisher (D) 16,355 20.6% 2,112 [+] 2.7% 79,262 20 2.08%
2010 G 52% John Kasich (R) 54,536 68.4% Ted Strickland* (D) 22,271 27.9% 2,955 [+] 3.7% 79,762 19 2.07%
2006 S1 50% Mike DeWine* (R) 43,588 63.4% Sherrod Brown (D) 25,102 36.5% 8 [+] 0.0% 68,698 20 1.71%
2006 G 49% Kenneth Blackwell (R) 39,094 57.4% Ted Strickland (D) 27,434 40.3% 1,563 [+] 2.3% 68,091 21 1.69%
2004 S3 70% George Voinovich* (R) 72,083 78.9% Eric Fingerhut (D) 19,251 21.1% 1 [+] 0.0% 91,335 15 1.68%
2002 G 40% Bob Taft III* (R) 37,388 76.0% Tim Hagan (D) 9,833 20.0% 1,947 [+] 4.0% 49,168 18 1.52%
2000 S1 59% Mike DeWine* (R) 51,135 76.0% Ted Celeste (D) 13,546 20.1% 2,597 [+] 3.9% 67,278 16 1.51%
1998 S3 42% George Voinovich (R) 32,323 71.5% Mary Boyle (D) 12,871 28.5% 0 0.0% 45,194 15 1.33%
1998 G 41% Bob Taft III (R) 29,897 67.3% Lee Fisher (D) 12,562 28.3% 1,934 [+] 4.4% 44,393 17 1.32%
1994 S1 41% Mike DeWine (R) 27,012 68.6% Joel Hyatt (D) 9,723 24.7% 2,640 [+] 6.7% 39,375 15 1.15%
1994 G 40% George Voinovich* (R) 31,635 81.9% Robert Burch (D) 5,903 15.3% 1,077 [+] 2.8% 38,615 10 1.15%
1992 S3 58% Mike DeWine (R) 27,862 53.5% John Glenn* (D) 20,184 38.7% 4,066 [+] 7.8% 52,112 11 1.08%
1990 G 37% George Voinovich (R) 21,299 68.4% Anthony Celebrezze (D) 9,861 31.6% 1 [+] 0.0% 31,161 13 0.90%
1988 S1 53% George Voinovich (R) 23,084 54.4% Howard Metzenbaum* (D) 19,368 45.6% 0 0.0% 42,452 11 0.98%
1986 S3 34% Thomas Kindness (R) 14,071 53.9% John Glenn* (D) 12,030 46.1% 0 0.0% 26,101 16 0.84%
1986 G 33% James Rhodes (R) 13,939 54.8% Richard Celeste* (D) 11,477 45.1% 9 [+] 0.0% 25,425 15 0.83%
1982 S1 38% Paul Pfeifer (R) 13,270 49.6% Howard Metzenbaum* (D) 13,050 48.7% 451 [+] 1.7% 26,771 8 0.79%
1982 G 37% Clarence Brown, Jr. (R) 13,249 50.8% Richard Celeste (D) 12,368 47.4% 485 [+] 1.9% 26,102 12 0.78%
1980 S3 51% John Glenn* (D) 23,152 67.1% James Betts (R) 10,600 30.7% 745 [+] 2.2% 34,497 2 0.86%
1978 G 34% James Rhodes* (R) 12,199 57.0% Richard Celeste (D) 8,627 40.3% 558 [+] 2.6% 21,384 8 0.75%
1976 S1 49% Robert Taft, Jr.* (R) 15,224 51.3% Howard Metzenbaum (D) 13,759 46.3% 714 [+] 2.4% 29,697 5 0.76%
1974 S3 37% John Glenn (D) 13,378 62.3% Ralph Perk (R) 7,226 33.7% 854 [+] 4.0% 21,458 3 0.72%
1974 G 37% James Rhodes (R) 12,667 58.1% John Gilligan* (D) 8,305 38.1% 814 [+] 3.7% 21,786 10 0.71%
1970 S1 40% Robert Taft, Jr. (R) 11,128 54.3% Howard Metzenbaum (D) 8,532 41.6% 838 [+] 4.1% 20,498 5 0.65%
1970 G 41% Roger Cloud (R) 11,635 56.0% John Gilligan (D) 8,129 39.1% 1,004 [+] 4.8% 20,768 13 0.65%
1968 S3 53% William Saxbe (R) 16,108 64.2% John Gilligan (D) 8,973 35.8% 0 0.0% 25,081 13 0.67%
1966 G 40% James Rhodes* (R) 12,072 67.2% Frazier Reams, Jr. (D) 5,896 32.8% 0 0.0% 17,968 5 0.62%
1964 S1 54% Robert Taft, Jr. (R) 12,514 54.6% Stephen Young* (D) 10,391 45.4% 0 0.0% 22,905 5 0.60%
1962 S3 41% Frank Lausche* (D) 8,696 52.4% John Briley (R) 7,901 47.6% 0 0.0% 16,597 9 0.55%
1962 G 42% James Rhodes (R) 11,491 68.0% Michael DiSalle* (D) 5,416 32.0% 0 0.0% 16,907 9 0.54%
*: 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 Warren County, OH

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

DateDistrictWinnerRunner-Up OtherTotal Votes
2024-11-05 OH01Orlando Sonza (R) 87,990 64.4% Greg Landsman* (D) 48,616 35.6% 0 0.0% 136,606
County Total for 2024-11-05:   136,606
2022-11-08 OH01Steve Chabot* (R) 66,860 66.0% Greg Landsman (D) 34,375 34.0% 0 0.0% 101,235
County Total for 2022-11-08:   101,235
2020-11-03 OH01Steve Chabot* (R) 87,071 65.0% Kate Schroder (D) 41,660 31.1% 5,139 3.8% 133,870
County Total for 2020-11-03:   133,870
2018-11-06 OH01Steve Chabot* (R) 65,775 65.7% Aftab Pureval (D) 32,228 32.2% 2,096 2.1% 100,099
County Total for 2018-11-06:   100,099
2016-11-08 OH01Steve Chabot* (R) 84,402 73.7% Michele Young (D) 30,147 26.3% 18 0.0% 114,567
County Total for 2016-11-08:   114,567
2014-11-04 OH01Steve Chabot* (R) 44,865 76.2% Fred Kundrata (D) 14,037 23.8% 0 0.0% 58,902
County Total for 2014-11-04:   58,902
2012-11-06 OH01Steve Chabot* (R) 76,126 72.9% Jeff Sinnard (D) 24,964 23.9% 3,406 3.3% 104,496
County Total for 2012-11-06:   104,496
2010-11-02 OH02Jean Schmidt* (R) 24,411 64.6% Sala Yalamanchili (D) 10,251 27.1% 3,097 8.2% 37,759
2010-11-02 OH03Mike Turner* (R) 31,926 78.7% Joe Roberts (D) 8,631 21.3% 0 0.0% 40,557
County Total for 2010-11-02:   78,316
2008-11-04 OH02Jean Schmidt* (R) 26,190 53.3% Victoria Wulsin (D) 15,182 30.9% 7,752 15.8% 49,124
2008-11-04 OH03Mike Turner* (R) 38,084 73.9% Jane Mitakides (D) 13,425 26.1% 0 0.0% 51,509
County Total for 2008-11-04:   100,633
2006-11-07 OH02Jean Schmidt* (R) 19,169 58.8% Victoria Wulsin (D) 13,399 41.1% 25 0.1% 32,593
2006-11-07 OH03Mike Turner* (R) 24,003 68.0% Richard Chema (D) 11,274 32.0% 0 0.0% 35,277
County Total for 2006-11-07:   67,870
2005-08-02 sp OH02Jean Schmidt (R) 7,623 58.2% Paul Hackett (D) 5,476 41.8% 2 0.0% 13,101
County Total for 2005-08-02:   13,101
2004-11-02 OH02Rob Portman* (R) 32,949 78.3% Charles Sanders (D) 9,107 21.7% 1 0.0% 42,057
2004-11-02 OH03Mike Turner* (R) 34,299 73.3% Jane Mitakides (D) 12,516 26.7% 0 0.0% 46,815
County Total for 2004-11-02:   88,872
2002-11-05 OH02Rob Portman* (R) 18,794 81.5% Charles Sanders (D) 4,270 18.5% 0 0.0% 23,064
2002-11-05 OH03Mike Turner (R) 19,253 74.2% Richard Carne (D) 6,703 25.8% 2 0.0% 25,958
County Total for 2002-11-05:   49,022
2000-11-07 OH02Rob Portman* (R) 26,118 74.2% Charles Sanders (D) 7,912 22.5% 1,177 3.3% 35,207
2000-11-07 OH06Mike Azinger (R) 19,756 64.7% Ted Strickland* (D) 9,936 32.6% 823 2.7% 30,515
County Total for 2000-11-07:   65,722
1996-11-05 OH02Rob Portman* (R) 20,055 68.6% Thomas Chandler (D) 7,263 24.8% 1,925 6.6% 29,243
1996-11-05 OH06Frank Cremeans* (R) 16,536 66.9% Ted Strickland (D) 8,173 33.1% 0 0.0% 24,709
County Total for 1996-11-05:   53,952
1994-11-08 OH02Rob Portman* (R) 15,892 76.4% Les Mann (D) 4,903 23.6% 0 0.0% 20,795
1994-11-08 OH06Frank Cremeans (R) 12,480 71.7% Ted Strickland* (D) 4,916 28.3% 0 0.0% 17,396
County Total for 1994-11-08:   38,191
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for Warren County, OH

Party registration is not used in this state, however as of 2022 registrations in Warren County, OH were estimated to be 43% Republican and 17% Democrat.

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2024 178,612 0 0.0% 0 0.0% 178,612 100.0% n/a n/a 106%
2022 172,066 0 0.0% 0 0.0% 172,066 100.0% n/a n/a 91%
2020 167,606 0 0.0% 0 0.0% 167,606 100.0% n/a n/a 89%
2018 160,431 0 0.0% 0 0.0% 160,431 100.0% n/a n/a 88%
2016 152,192 0 0.0% 0 0.0% 152,192 100.0% n/a n/a 87%
2014 146,974 0 0.0% 0 0.0% 146,974 100.0% n/a n/a 88%
2012 146,374 0 0.0% 0 0.0% 146,374 100.0% n/a n/a 91%
2010 135,490 0 0.0% 0 0.0% 135,490 100.0% n/a n/a 88%
2008 140,988 0 0.0% 0 0.0% 140,988 100.0% n/a n/a 96%
2006 127,843 0 0.0% 0 0.0% 127,843 100.0% n/a n/a 92%
2004 125,165 0 0.0% 0 0.0% 125,165 100.0% n/a n/a 96%
2002 101,207 0 0.0% 0 0.0% 101,207 100.0% n/a n/a 83%
2000 96,536 0 0.0% 0 0.0% 96,536 100.0% n/a n/a 84%
1998 86,276 0 0.0% 0 0.0% 86,276 100.0% n/a n/a 80%
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.