| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 15,772 | 20,482 | 36,517 | |
| 2020 | R | 16,359 | 19,632 | 36,754 | |
| 2016 | R | 13,522 | 17,384 | 33,172 | |
| 2012 | D | 17,007 | 13,454 | 31,161 | |
| 2008 | D | 18,128 | 15,243 | 34,022 | |
| 2004 | R | 17,534 | 17,743 | 36,052 | |
| 2000 | D | 17,031 | 14,988 | 33,978 | |
| 1996 | D | 15,879 | 11,093 | 31,894 | |
| 1992 | D | 13,088 | 12,065 | 35,671 | |
| 1988 | R | 15,044 | 16,934 | 32,285 | |
| 1984 | R | 12,207 | 21,451 | 33,779 | |
| 1980 | R | 11,708 | 17,945 | 32,756 | |
| 1976 | R | 13,348 | 19,775 | 33,343 | |
| 1972 | R | 11,097 | 22,774 | 33,952 | |
| 1968 | R | 14,604 | 16,167 | 32,666 | |
| 1964 | D | 24,090 | 11,453 | 35,566 | |
| 1960 | R | 17,257 | 20,437 | 37,722 | |
| 1956 | R | 10,268 | 26,503 | 36,771 | |
| 1952 | R | 11,695 | 25,037 | 36,804 | |
| 1948 | R | 14,317 | 19,017 | 33,747 | |
| 1944 | R | 13,849 | 18,680 | 32,629 | |
| 1940 | R | 13,985 | 21,032 | 35,173 | |
| 1936 | R | 12,158 | 20,203 | 33,200 | |
| 1932 | R | 12,989 | 17,280 | 31,043 | |
| 1928 | R | 11,787 | 20,202 | 32,525 | |
| 1924 | R | 7,369 | 17,252 | 27,100 | |
| 1920 | R | 6,343 | 15,234 | 22,510 | |
| 1916 | R | 6,391 | 7,831 | 14,689 | |
| 1912 | R | 4,691 | 5,788 | 13,777 | |
| 1908 | R | 5,789 | 9,699 | 16,624 | |
| 1904 | R | 5,707 | 10,708 | 17,028 | |
| 1900 | R | 6,330 | 10,328 | 17,217 | |
| 1896 | R | 5,846 | 10,024 | 16,330 | |
| 1892 | R | 5,999 | 8,341 | 15,461 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Cayuga County anchors the northern Finger Lakes, where a shrinking manufacturing base and a predominantly rural, non-college white electorate have pushed presidential margins from competitive to reliably Republican over the past decade.
The Democratic margin in Cayuga County has rarely exceeded thirty-six points in modern history; the Republican margin has rarely exceeded forty-four points. 2024 delivered the county to the Republican candidate by thirteen points.
Cayuga County's demographics resemble the country more than they resemble most counties. A 88% non-Hispanic-white share, a 14% poverty rate, and a median household income of $67,904 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Sullivan County and Erie County.
