| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 576 | 1,517 | 2,135 | |
| 2020 | R | 590 | 1,530 | 2,160 | |
| 2016 | R | 565 | 1,395 | 2,131 | |
| 2012 | R | 1,028 | 1,108 | 2,185 | |
| 2008 | D | 1,118 | 1,046 | 2,206 | |
| 2004 | R | 977 | 1,317 | 2,325 | |
| 2000 | R | 897 | 1,170 | 2,145 | |
| 1996 | D | 1,070 | 920 | 2,326 | |
| 1992 | D | 1,034 | 863 | 2,596 | |
| 1988 | D | 1,283 | 1,080 | 2,380 | |
| 1984 | R | 1,221 | 1,706 | 2,960 | |
| 1980 | R | 940 | 1,779 | 2,984 | |
| 1976 | D | 1,507 | 1,388 | 2,937 | |
| 1972 | R | 1,161 | 1,814 | 3,045 | |
| 1968 | R | 993 | 1,868 | 3,128 | |
| 1964 | D | 1,941 | 1,321 | 3,263 | |
| 1960 | R | 1,643 | 2,185 | 3,828 | |
| 1956 | R | 1,756 | 2,248 | 4,020 | |
| 1952 | R | 1,383 | 3,129 | 4,531 | |
| 1948 | R | 1,817 | 2,142 | 4,012 | |
| 1944 | R | 1,868 | 2,540 | 4,413 | |
| 1940 | R | 2,088 | 3,182 | 5,292 | |
| 1936 | R | 2,249 | 2,953 | 5,268 | |
| 1932 | D | 2,097 | 1,795 | 3,939 | |
| 1928 | R | 1,479 | 2,958 | 4,479 | |
| 1924 | R | 897 | 2,547 | 4,692 | |
| 1920 | R | 1,670 | 2,845 | 4,557 | |
| 1916 | R | 1,365 | 1,401 | 2,791 | |
| 1912 | D | 1,215 | 913 | 2,783 | |
| 1908 | R | 1,325 | 1,595 | 3,008 | |
| 1904 | R | 1,003 | 1,761 | 2,989 | |
| 1900 | R | 1,428 | 1,873 | 3,392 | |
| 1896 | R | 1,701 | 1,736 | 3,488 | |
| 1892 | R | 1,149 | 1,533 | 2,902 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Adams County's population has contracted for decades, leaving a rural electorate that has shifted decisively toward Republican presidential candidates, posting a 44-point margin in 2024 — among the widest in the state.
The Republican margin in Adams County reached its widest at forty-four points in 2024. The margin in 2024 was forty-four points, in line with the county's deep historical pattern.
Adams County's loyalty is rooted in its place. Median household income of $71,875, a 95% non-Hispanic-white share, and a population of 3,622 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 Crawford County and Murray County.
