| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,211 | 2,223 | 3,439 | |
| 2020 | R | 1,178 | 2,225 | 3,460 | |
| 2016 | R | 949 | 2,064 | 3,225 | |
| 2012 | R | 1,128 | 1,932 | 3,113 | |
| 2008 | R | 1,225 | 2,141 | 3,411 | |
| 2004 | R | 1,145 | 2,475 | 3,695 | |
| 2000 | R | 1,114 | 2,388 | 3,682 | |
| 1996 | R | 1,228 | 1,841 | 3,612 | |
| 1992 | R | 963 | 2,038 | 3,817 | |
| 1988 | R | 976 | 2,320 | 3,317 | |
| 1984 | R | 737 | 2,637 | 3,382 | |
| 1980 | R | 925 | 2,038 | 3,230 | |
| 1976 | R | 1,052 | 2,306 | 3,370 | |
| 1972 | R | 731 | 2,597 | 3,334 | |
| 1968 | R | 762 | 2,123 | 3,053 | |
| 1964 | D | 1,603 | 1,269 | 2,873 | |
| 1960 | R | 795 | 2,168 | 2,964 | |
| 1956 | R | 470 | 2,619 | 3,089 | |
| 1952 | R | 546 | 2,615 | 3,165 | |
| 1948 | R | 744 | 2,000 | 2,790 | |
| 1944 | R | 830 | 1,834 | 2,673 | |
| 1940 | R | 840 | 2,029 | 2,873 | |
| 1936 | R | 934 | 1,695 | 2,629 | |
| 1932 | R | 1,107 | 1,603 | 2,728 | |
| 1928 | R | 952 | 1,399 | 2,351 | |
| 1924 | R | 631 | 1,063 | 1,736 | |
| 1920 | R | 516 | 881 | 1,406 | |
| 1916 | D | 623 | 612 | 1,250 | |
| 1912 | D | 493 | 454 | 1,135 | |
| 1908 | R | 586 | 632 | 1,264 | |
| 1904 | R | 655 | 688 | 1,356 | |
| 1900 | R | 509 | 651 | 1,184 | |
| 1896 | R | 378 | 756 | 1,192 | |
| 1892 | D | 480 | 454 | 1,019 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Hamilton County's roughly 5,400 residents are spread across the Adirondack wilderness, making it the smallest county by population in New York and one where Republican presidential candidates have carried comfortable margins for decades.
The Democratic margin in Hamilton County peaked at twelve points in 1964. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was twenty-nine points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Hamilton County's median household income of $68,835 sits well below state and national norms, and 11% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Union County and Kenton County.