Between 1912 and 2020 in the state of Ohio there have been 28 elections of which: 12 have been won by Democrats, 16 won by Republicans, and 0 won by "other parties".
| Year | Electoral | Presidential Candidate Votes | Population | Votes | Turnout | Winner | 
|---|---|---|---|---|---|---|
| 1912 | 24 | O Theodore Roosevelt (NY)   229,807  
O Eugene V. Debs (IN)   90,144  
O Arthur E. Reimer (MA)   2,630  
D Woodrow Wilson (NJ)   424,834  24 Electoral Votes  
R William Howard Taft (OH)   278,168  
O Eugene W. Chafin (IL)   11,511   | 
4,902,509 | 1,037,094 | 21.15% | D | 
| 1916 | 24 | O Allan L. Benson (NY)   38,092  
O Arthur E. Reimer (MA)   
R Charles Evans Hughes (NY)   514,753  
O Frank Hanly (IN)   8,080  
D Woodrow Wilson (NJ)   604,161  24 Electoral Votes   | 
5,173,284 | 1,165,086 | 22.52% | D | 
| 1920 | 24 | R Warren G. Harding (OH)   1,182,022  24 Electoral Votes  
O Eugene V. Debs (IN)   57,147  
O Aaron S. Watkins (IN)   
O Other (XX)   
D James M. Cox (OH)   780,037  
O Parley P. Christensen (IL)   
O James E. Ferguson (TX)    | 
5,759,394 | 2,019,206 | 35.06% | R | 
| 1924 | 24 | R Calvin Coolidge (MA)   1,176,130  24 Electoral Votes  
O Robert M. La Follette (WI)   357,948  
O William Z. Foster (MA)   
D John W. Davis (WV)   477,888  
O Herman P. Faris (MO)   
O Other (XX)   3,025   | 
6,004,266 | 2,014,991 | 33.56% | R | 
| 1928 | 24 | R Herbert Hoover (CA)   1,627,546  24 Electoral Votes  
O Norman Thomas (NY)   8,683  
O Verne L. Reynolds (MI)   1,515  
D Al Smith (NY)   864,210  
O William Z. Foster (IL)   2,836   | 
6,249,139 | 2,504,790 | 40.08% | R | 
| 1932 | 26 | R Herbert Hoover (CA)   1,227,319  
O Other (XX)   16,620  
D Franklin D. Roosevelt (NY)   1,301,695  26 Electoral Votes  
O Norman Thomas (NY)   64,094   | 
6,779,631 | 2,609,728 | 38.49% | D | 
| 1936 | 26 | R Alfred Landon (KS)   1,127,855  
O Norman Thomas (NY)   117  
D Franklin D. Roosevelt (NY)   1,747,140  26 Electoral Votes  
O William Lemke (ND)   132,212  
O Earl Browder (KS)   5,265   | 
7,045,499 | 3,012,589 | 42.76% | D | 
| 1940 | 26 | R Wendell Willkie (NY)   1,586,773  
O Other (XX)   
D Franklin D. Roosevelt (NY)   1,733,139  26 Electoral Votes  
O Norman Thomas (NY)    | 
6,907,612 | 3,319,912 | 48.06% | D | 
| 1944 | 25 | R Thomas E. Dewey (NY)   1,582,293  25 Electoral Votes  
O Norman Thomas (NY)   
D Franklin D. Roosevelt (NY)   1,570,763  
O Texas Regulars (TX)   
O Other (XX)    | 
7,183,916 | 3,153,056 | 43.89% | R | 
| 1948 | 25 | D Harry S. Truman (MO)   1,452,791  25 Electoral Votes  
O Strom Thurmond (SC)   
O Norman Thomas (NY)   
R Thomas E. Dewey (NY)   1,445,684  
O Henry A. Wallace (IA)   37,596  
O Other (XX)    | 
7,460,221 | 2,936,071 | 39.36% | D | 
| 1952 | 25 | D Adlai Stevenson (IL)   1,600,367  
O Stuart Hamblen (TX)   
R Dwight D. Eisenhower (NY)   2,100,391  25 Electoral Votes  
O Vincent Hallinan (CA)   
O Eric Hass (NY)    | 
8,105,560 | 3,700,758 | 45.66% | R | 
| 1956 | 25 | R Dwight D. Eisenhower (NY)   2,262,610  25 Electoral Votes  
O Other (XX)   
D Adlai Stevenson (IL)   1,439,655  
O Eric Hass (NY)    | 
8,423,425 | 3,702,265 | 43.95% | R | 
| 1960 | 25 | D John Fitzgerald Kennedy (MA)   1,944,248  
O Other (XX)   
R Richard Milhous Nixon (CA)   2,217,611  25 Electoral Votes  
O Eric Hass (NY)    | 
9,706,397 | 4,161,859 | 42.88% | R | 
| 1964 | 26 | D Lyndon Baines Johnson (TX)   2,498,331  26 Electoral Votes  
O Other (XX)   
R Barry Morris Goldwater (AZ)   1,470,865  
O Eric Hass (NY)    | 
10,094,653 | 3,969,196 | 39.32% | D | 
| 1968 | 26 | D Hubert Horatio Humphrey (MN)   1,700,586  
R Richard Milhous Nixon (CA)   1,791,014  26 Electoral Votes  
O George Corley Wallace (AL)   467,495   | 
10,482,909 | 3,959,095 | 37.77% | R | 
| 1972 | 25 | R Richard Milhous Nixon (CA)   2,441,827  25 Electoral Votes  
O John G. Schmitz (CA)   80,067  
D George Stanley McGovern (SD)   1,558,889  
O Linda Jenness (GA)    | 
10,865,057 | 4,080,783 | 37.56% | R | 
| 1976 | 25 | D James Earl Carter, Jr. (GA)   2,011,621  25 Electoral Votes  
O Eugene McCarthy (MN)   58,258  
R Gerald Rudolph Ford, Jr. (MI)   2,000,505  
O Roger MacBride (VT)   8,961   | 
11,291,138 | 4,079,345 | 36.13% | D | 
| 1980 | 25 | R Ronald Wilson Reagan  (CA)   2,206,545  25 Electoral Votes  
O John Bayard Anderson  (IL)   254,472  
D James Earl Carter, Jr. (GA)   1,752,414  
O Ed Clark (CA)   49,033   | 
10,797,630 | 4,262,464 | 39.48% | R | 
| 1984 | 23 | D Walter Frederick Mondale (MN)   1,825,440  
R Ronald Wilson Reagan (CA)   2,678,560  23 Electoral Votes  
O David Bergland (CA)   5,886   | 
11,229,535 | 4,509,886 | 40.16% | R | 
| 1988 | 23 | R George Herbert Walker Bush (TX)   2,416,549  23 Electoral Votes  
O Ronald Ernest Paul (TX)   11,989  
D Michael Stanley Dukakis (MA)   1,939,629  
O Lenora Fulani (PA)   12,017   | 
11,661,440 | 4,380,184 | 37.56% | R | 
| 1992 | 21 | D William Jefferson Clinton (AR)   1,984,942  21 Electoral Votes  
O Henry Ross Perot (TX)   1,036,426  
O Other (XX)   17,034  
R George Herbert Walker Bush (TX)   1,894,310  
O Andre Verne Marrou (AK)   7,252   | 
11,064,057 | 4,939,964 | 44.65% | D | 
| 1996 | 21 | R Robert Joseph Dole (KS)   1,859,883  
O Ralph Nader (CT)   2,962  
O Other (XX)   27,309  
D William Jefferson Clinton (AK)   2,148,222  21 Electoral Votes  
O Henry Ross Perot (TX)   483,207  
O Harry Browne (TN)   12,851   | 
11,497,942 | 4,534,434 | 39.44% | D | 
| 2000 | 21 | R George Walker Bush (TX)   2,351,209  21 Electoral Votes  
O Ralph Nader (CT)   117,857  
O Harry Browne (TN)   13,475  
O John Hagelin (IA)   6,169  
D Albert Arnold Gore, Jr.  (TN)   2,186,190  
O Pat Buchanan (VA)   26,724  
O Howard Phillips (VA)   3,823  
O Other (XX)   10   | 
11,353,140 | 4,705,457 | 41.45% | R | 
| 2004 | 20 | R George Walker Bush (TX)   2,859,768  20 Electoral Votes  
O Ralph Nader (CT)   
O Michael Peroutka (MD)   11,939  
O Other (XX)   166  
D John Forbes Kerry (MA)   2,741,167  
O Michael Badnarik (TX)   14,676  
O David Cobb (TX)   192   | 
11,807,266 | 5,627,908 | 47.66% | R | 
| 2008 | 20 | D Barack Hussein Obama (IL)   2,940,044  20 Electoral Votes  
O Ralph Nader  (CT)   42,337  
O Charles Obadiah Baldwin (FL)   12,565  
O Other (XX)   7,149  
R John Sidney McCain (AZ)   2,677,820  
O Robert Laurence Barr (GA)   19,917  
O Cynthia McKinney (GA)   8,518   | 
12,261,391 | 5,708,350 | 46.56% | D | 
| 2012 | 18 | R Mitt Romney (MA)   2,661,433  
O Jill Stein (MA)   18,574  
D Barack Hussein Obama (IL)   2,827,710  18 Electoral Votes  
O Gary Johnson (NM)   49,493  
O Other (XX)   23,630   | 
11,767,234 | 5,580,840 | 47.43% | D | 
| 2016 | 18 | O Gary Johnson (NM)   168,599  
D Hillary Clinton (NY)   2,320,596  
O Jill Stein (MA)   44,310  
R Donal Trump (NY)   2,776,683  18 Electoral Votes  
O Evan McMullin (UT)    | 
12,228,694 | 5,310,188 | 43.42% | R | 
| 2020 | 18 | R Donald Trump (FL)   3,154,834  18 Electoral Votes  
O Howie Hawkins (CA)   18,812  
D Joe Biden (DE)   2,679,165  
O Jo Jorgensen (SC)   67,569   | 
11,881,199 | 5,920,380 | 49.83% | R |