| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 11,403 | 32,429 | 44,417 | |
| 2020 | R | 10,840 | 30,714 | 42,278 | |
| 2016 | R | 8,177 | 26,163 | 36,343 | |
| 2012 | R | 9,451 | 23,624 | 33,672 | |
| 2008 | R | 9,825 | 23,120 | 33,338 | |
| 2004 | R | 7,019 | 22,100 | 29,704 | |
| 2000 | R | 6,643 | 17,744 | 25,271 | |
| 1996 | R | 5,965 | 13,458 | 22,102 | |
| 1992 | R | 5,190 | 12,896 | 21,866 | |
| 1988 | R | 4,170 | 13,251 | 17,634 | |
| 1984 | R | 3,899 | 15,308 | 19,323 | |
| 1980 | R | 5,202 | 11,011 | 17,120 | |
| 1976 | R | 5,626 | 8,452 | 14,692 | |
| 1972 | R | 1,766 | 9,106 | 11,181 | |
| 1968 | R | 2,028 | 6,313 | 10,900 | |
| 1964 | R | 4,039 | 4,327 | 8,372 | |
| 1960 | R | 1,914 | 4,034 | 5,989 | |
| 1956 | R | 1,484 | 3,466 | 5,092 | |
| 1952 | R | 1,453 | 3,414 | 4,879 | |
| 1948 | R | 1,355 | 1,690 | 3,454 | |
| 1944 | D | 2,913 | 2,319 | 5,247 | |
| 1940 | D | 2,774 | 1,768 | 4,564 | |
| 1936 | D | 2,872 | 1,668 | 4,571 | |
| 1932 | D | 2,606 | 1,541 | 4,237 | |
| 1928 | R | 1,507 | 2,679 | 4,186 | |
| 1924 | D | 1,920 | 1,265 | 3,265 | |
| 1920 | D | 2,106 | 1,707 | 3,879 | |
| 1916 | D | 1,751 | 845 | 2,644 | |
| 1912 | D | 1,556 | 568 | 2,480 | |
| 1908 | D | 1,435 | 987 | 2,537 | |
| 1904 | D | 1,582 | 1,096 | 2,748 | |
| 1900 | D | 2,869 | 2,473 | 5,531 | |
| 1896 | D | 3,066 | 2,823 | 6,117 | |
| 1892 | D | 3,563 | 2,136 | 5,986 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Augusta County's R+47.5 presidential margin in 2024 places it among Virginia's most one-sided jurisdictions, reflecting a rural Shenandoah Valley electorate where Republican candidates have dominated consistently across federal, state, and local races.
The Republican margin in Augusta County reached its widest at sixty-six points in 1972. The margin in 2024 was forty-seven points, in line with the county's deep historical pattern.
Augusta County's loyalty is rooted in its place. Median household income of $82,049, a 89% non-Hispanic-white share, and a population of 78,033 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 Houston County and Madison County.