| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 10,134 | 17,826 | 28,441 | |
| 2020 | R | 10,199 | 16,644 | 27,873 | |
| 2016 | R | 9,092 | 15,001 | 26,064 | |
| 2012 | D | 12,216 | 11,800 | 24,787 | |
| 2008 | D | 13,335 | 11,867 | 25,758 | |
| 2004 | D | 13,555 | 12,953 | 27,108 | |
| 2000 | D | 11,538 | 10,684 | 23,951 | |
| 1996 | D | 11,773 | 6,247 | 23,111 | |
| 1992 | D | 9,274 | 6,780 | 26,424 | |
| 1988 | R | 8,603 | 11,430 | 20,201 | |
| 1984 | R | 7,657 | 13,010 | 20,771 | |
| 1980 | R | 8,115 | 9,286 | 19,513 | |
| 1976 | D | 9,465 | 8,868 | 18,966 | |
| 1972 | R | 5,921 | 10,079 | 16,005 | |
| 1968 | D | 8,312 | 6,720 | 15,356 | |
| 1964 | D | 10,694 | 4,541 | 15,253 | |
| 1960 | R | 6,956 | 10,142 | 17,098 | |
| 1956 | R | 4,119 | 10,471 | 14,590 | |
| 1952 | R | 4,815 | 9,805 | 14,649 | |
| 1948 | R | 4,034 | 6,301 | 10,418 | |
| 1944 | R | 5,331 | 7,167 | 12,523 | |
| 1940 | R | 6,534 | 7,526 | 14,088 | |
| 1936 | R | 5,282 | 7,558 | 13,281 | |
| 1932 | R | 6,040 | 7,144 | 13,461 | |
| 1928 | R | 3,251 | 8,055 | 11,406 | |
| 1924 | R | 1,822 | 6,855 | 9,285 | |
| 1920 | R | 2,770 | 6,533 | 9,592 | |
| 1916 | R | 3,134 | 3,567 | 6,961 | |
| 1912 | D | 2,317 | 1,235 | 6,356 | |
| 1908 | R | 1,676 | 3,688 | 5,648 | |
| 1904 | R | 1,324 | 3,716 | 5,386 | |
| 1900 | R | 1,949 | 3,727 | 6,089 | |
| 1896 | R | 2,018 | 4,695 | 6,892 | |
| 1892 | R | 2,872 | 3,777 | 6,918 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Somerset's sprawling interior landscape — logging towns, potato farms, and a shrinking manufacturing base — has tracked toward increasingly lopsided Republican margins over the past decade, with 2024's R+27.1 result among the widest in the state.
The Republican margin in Somerset County reached its widest at fifty-four points in 1924. The margin in 2024 was twenty-seven points, in line with the county's deep historical pattern.
Somerset County's loyalty is rooted in its place. Median household income of $58,179, a 95% non-Hispanic-white share, and a population of 50,959 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 Aroostook County and Clare County.
