| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 10,436 | 14,702 | 25,440 | |
| 2020 | R | 10,346 | 14,271 | 25,137 | |
| 2016 | R | 7,405 | 13,073 | 22,050 | |
| 2012 | R | 9,030 | 11,174 | 20,668 | |
| 2008 | R | 9,850 | 12,059 | 22,335 | |
| 2004 | R | 8,933 | 12,996 | 22,398 | |
| 2000 | R | 8,480 | 11,332 | 21,095 | |
| 1996 | R | 8,251 | 8,712 | 20,124 | |
| 1992 | R | 6,924 | 9,390 | 21,191 | |
| 1988 | R | 7,265 | 11,874 | 19,319 | |
| 1984 | R | 5,858 | 14,150 | 20,070 | |
| 1980 | R | 6,488 | 11,286 | 19,498 | |
| 1976 | R | 7,740 | 11,370 | 19,264 | |
| 1972 | R | 5,260 | 14,313 | 19,618 | |
| 1968 | R | 5,499 | 10,954 | 17,997 | |
| 1964 | D | 10,034 | 7,842 | 17,894 | |
| 1960 | R | 6,441 | 11,878 | 18,320 | |
| 1956 | R | 3,811 | 14,262 | 18,073 | |
| 1952 | R | 4,504 | 12,907 | 17,435 | |
| 1948 | R | 4,955 | 10,566 | 15,883 | |
| 1944 | R | 5,231 | 9,807 | 15,064 | |
| 1940 | R | 6,425 | 10,153 | 16,616 | |
| 1936 | R | 6,744 | 9,060 | 16,060 | |
| 1932 | R | 6,794 | 7,334 | 14,261 | |
| 1928 | R | 4,440 | 9,529 | 14,285 | |
| 1924 | R | 3,951 | 7,503 | 12,188 | |
| 1920 | R | 3,498 | 6,323 | 10,282 | |
| 1916 | R | 3,622 | 3,649 | 7,438 | |
| 1912 | D | 3,647 | 2,711 | 7,471 | |
| 1908 | R | 3,711 | 4,191 | 8,313 | |
| 1904 | R | 3,845 | 4,527 | 8,661 | |
| 1900 | R | 4,269 | 4,395 | 8,912 | |
| 1896 | R | 3,688 | 4,540 | 8,492 | |
| 1892 | R | 3,771 | 3,914 | 8,217 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Greene County sits along the Hudson River's west bank, where a largely rural, working-class population has moved the presidential margin from single digits to R+16.9 since the early 2000s, tracking a broader pattern across small Upstate New York counties.
The Republican margin in Greene County reached its widest at fifty-eight points in 1956. The margin in 2024 was seventeen points, in line with the county's deep historical pattern.
Greene County's loyalty is rooted in its place. Median household income of $77,945, a 85% non-Hispanic-white share, and a population of 47,409 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 Warren County and Steuben County.