| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 19,842 | 40,248 | 60,871 | |
| 2020 | R | 18,207 | 37,523 | 56,540 | |
| 2016 | R | 14,219 | 31,423 | 47,990 | |
| 2012 | R | 15,091 | 26,767 | 42,625 | |
| 2008 | R | 17,633 | 26,349 | 44,491 | |
| 2004 | R | 13,764 | 28,247 | 42,228 | |
| 2000 | R | 11,682 | 20,848 | 33,444 | |
| 1996 | R | 10,774 | 15,338 | 29,508 | |
| 1992 | R | 9,576 | 13,552 | 29,501 | |
| 1988 | R | 8,299 | 15,650 | 24,105 | |
| 1984 | R | 7,289 | 16,786 | 24,174 | |
| 1980 | R | 7,266 | 13,760 | 22,404 | |
| 1976 | R | 8,771 | 12,133 | 21,322 | |
| 1972 | R | 5,529 | 13,593 | 19,365 | |
| 1968 | R | 5,993 | 11,303 | 18,907 | |
| 1964 | D | 11,148 | 8,617 | 19,860 | |
| 1960 | R | 7,895 | 12,933 | 20,854 | |
| 1956 | R | 6,281 | 12,250 | 18,531 | |
| 1952 | R | 5,691 | 11,016 | 16,737 | |
| 1948 | R | 5,409 | 7,988 | 13,509 | |
| 1944 | R | 5,881 | 8,787 | 14,735 | |
| 1940 | R | 7,354 | 8,609 | 15,984 | |
| 1936 | D | 8,336 | 8,313 | 17,410 | |
| 1932 | D | 7,185 | 6,084 | 13,494 | |
| 1928 | R | 4,635 | 9,656 | 14,349 | |
| 1924 | R | 4,840 | 5,778 | 10,918 | |
| 1920 | R | 3,852 | 5,323 | 9,349 | |
| 1916 | D | 3,963 | 3,290 | 7,519 | |
| 1912 | D | 3,682 | 819 | 7,210 | |
| 1908 | D | 4,034 | 3,685 | 7,849 | |
| 1904 | R | 3,812 | 4,017 | 7,931 | |
| 1900 | D | 3,967 | 3,718 | 7,832 | |
| 1896 | R | 3,814 | 4,170 | 8,185 | |
| 1892 | D | 3,716 | 3,384 | 7,170 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Adams County sits in the Mid-Atlantic. Its political identity has been Republican for as long as anyone now living can remember. 1 consecutive presidential elections in modern records have gone for the Republican candidate, often by margins that would be considered landslide territory anywhere else.
The Republican margin in Adams County reached its widest at forty-two points in 1972. The margin in 2024 was thirty-four points, in line with the county's deep historical pattern.
Adams County's loyalty is rooted in its place. Median household income of $84,092, a 89% non-Hispanic-white share, and a population of 106,115 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 Lincoln County and Adams County.
