| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 32,622 | 57,405 | 91,488 | |
| 2020 | R | 32,975 | 52,710 | 87,148 | |
| 2016 | R | 26,863 | 43,261 | 74,655 | |
| 2012 | D | 36,310 | 35,593 | 73,095 | |
| 2008 | D | 39,180 | 35,858 | 76,422 | |
| 2004 | R | 36,089 | 37,470 | 74,132 | |
| 2000 | D | 31,555 | 28,940 | 61,795 | |
| 1996 | D | 26,072 | 19,678 | 52,529 | |
| 1992 | D | 24,957 | 20,250 | 59,031 | |
| 1988 | R | 21,847 | 26,189 | 48,324 | |
| 1984 | R | 19,617 | 29,419 | 49,287 | |
| 1980 | R | 20,578 | 25,612 | 49,964 | |
| 1976 | D | 23,290 | 20,676 | 44,597 | |
| 1972 | R | 17,726 | 23,263 | 42,479 | |
| 1968 | D | 18,921 | 15,685 | 39,572 | |
| 1964 | D | 26,528 | 11,499 | 38,111 | |
| 1960 | D | 19,684 | 18,607 | 38,423 | |
| 1956 | R | 14,414 | 18,782 | 33,305 | |
| 1952 | R | 12,758 | 17,159 | 30,074 | |
| 1948 | R | 10,434 | 11,070 | 21,824 | |
| 1944 | R | 10,275 | 13,478 | 23,836 | |
| 1940 | R | 10,368 | 13,517 | 23,945 | |
| 1936 | D | 11,075 | 8,330 | 21,284 | |
| 1932 | D | 12,417 | 7,255 | 20,010 | |
| 1928 | R | 7,242 | 10,202 | 17,507 | |
| 1924 | R | 4,981 | 8,940 | 15,383 | |
| 1920 | R | 5,224 | 8,646 | 14,096 | |
| 1916 | D | 4,202 | 3,787 | 8,119 | |
| 1912 | D | 2,995 | 2,253 | 7,297 | |
| 1908 | R | 3,451 | 4,206 | 7,926 | |
| 1904 | R | 3,127 | 4,407 | 7,739 | |
| 1900 | R | 3,859 | 3,876 | 7,929 | |
| 1896 | D | 4,208 | 4,053 | 8,421 | |
| 1892 | D | 3,769 | 2,914 | 7,021 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Monroe County shifted sharply rightward over the past decade, posting an R+27 margin in 2024 after splitting more evenly in earlier cycles — a pattern common to blue-collar, majority-white counties along the western Lake Erie shore.
The Republican margin in Monroe County reached its widest at twenty-seven points in 2024. The margin in 2024 was twenty-seven points, in line with the county's deep historical pattern.
Monroe County's loyalty is rooted in its place. Median household income of $77,335, a 90% non-Hispanic-white share, and a population of 155,505 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Roscommon County and Clare County.
