| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 976 | 2,721 | 3,730 | |
| 2020 | R | 921 | 2,619 | 3,595 | |
| 2016 | R | 750 | 2,291 | 3,152 | |
| 2012 | R | 1,034 | 1,868 | 2,949 | |
| 2008 | R | 1,233 | 1,841 | 3,120 | |
| 2004 | R | 1,213 | 2,056 | 3,285 | |
| 2000 | R | 1,066 | 1,928 | 3,105 | |
| 1996 | R | 1,071 | 1,352 | 2,858 | |
| 1992 | R | 1,030 | 1,340 | 3,113 | |
| 1988 | R | 1,091 | 1,808 | 2,922 | |
| 1984 | R | 952 | 1,926 | 2,889 | |
| 1980 | R | 1,074 | 1,676 | 2,902 | |
| 1976 | R | 1,347 | 1,584 | 2,951 | |
| 1972 | R | 885 | 1,886 | 2,808 | |
| 1968 | R | 1,035 | 1,629 | 2,870 | |
| 1964 | D | 1,690 | 1,344 | 3,038 | |
| 1960 | R | 1,471 | 1,808 | 3,284 | |
| 1956 | R | 1,286 | 2,007 | 3,297 | |
| 1952 | R | 1,239 | 2,011 | 3,253 | |
| 1948 | R | 1,084 | 1,752 | 2,862 | |
| 1944 | R | 1,329 | 1,858 | 3,195 | |
| 1940 | R | 1,626 | 2,059 | 3,692 | |
| 1936 | R | 1,740 | 2,121 | 3,922 | |
| 1932 | D | 1,602 | 1,457 | 3,115 | |
| 1928 | R | 1,101 | 2,044 | 3,162 | |
| 1924 | R | 913 | 1,668 | 2,791 | |
| 1920 | R | 1,061 | 1,620 | 2,814 | |
| 1916 | D | 1,037 | 888 | 2,020 | |
| 1912 | D | 912 | 547 | 2,067 | |
| 1908 | R | 1,076 | 1,119 | 2,369 | |
| 1904 | R | 1,188 | 1,429 | 2,746 | |
| 1900 | D | 1,376 | 1,266 | 2,785 | |
| 1896 | D | 1,300 | 1,215 | 2,640 | |
| 1892 | D | 1,266 | 873 | 2,234 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Sullivan County's rugged Endless Mountains terrain has long limited both population growth and economic diversification, and its roughly 6,500 residents have delivered some of the widest Republican presidential margins in the state for over a decade.
The Republican margin in Sullivan County reached its widest at forty-nine points in 2016. The margin in 2024 was forty-seven points, in line with the county's deep historical pattern.
Sullivan County's loyalty is rooted in its place. Median household income of $69,764, a 94% non-Hispanic-white share, and a population of 5,888 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 McKean County and Morgan County.
