| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,235 | 9,710 | 12,095 | |
| 2020 | R | 2,400 | 9,453 | 11,985 | |
| 2016 | R | 1,959 | 8,219 | 10,576 | |
| 2012 | R | 2,744 | 6,404 | 9,271 | |
| 2008 | R | 3,154 | 6,605 | 9,903 | |
| 2004 | R | 2,905 | 7,170 | 10,143 | |
| 2000 | R | 2,604 | 5,843 | 8,558 | |
| 1996 | R | 2,716 | 4,249 | 7,722 | |
| 1992 | R | 2,909 | 4,533 | 8,507 | |
| 1988 | R | 2,575 | 5,186 | 7,842 | |
| 1984 | R | 2,200 | 5,524 | 7,777 | |
| 1980 | R | 2,788 | 5,084 | 8,076 | |
| 1976 | R | 3,064 | 3,658 | 6,790 | |
| 1972 | R | 1,839 | 4,155 | 6,111 | |
| 1968 | R | 1,595 | 3,598 | 5,885 | |
| 1964 | R | 2,920 | 2,974 | 5,894 | |
| 1960 | R | 2,355 | 4,807 | 7,162 | |
| 1956 | R | 2,021 | 4,565 | 6,592 | |
| 1952 | R | 2,341 | 4,011 | 6,362 | |
| 1948 | R | 2,174 | 2,880 | 5,092 | |
| 1944 | R | 2,436 | 3,629 | 6,085 | |
| 1940 | R | 2,678 | 3,156 | 5,861 | |
| 1936 | R | 2,676 | 2,907 | 5,604 | |
| 1932 | D | 3,872 | 3,721 | 7,624 | |
| 1928 | R | 2,295 | 3,937 | 6,242 | |
| 1924 | R | 2,858 | 3,183 | 6,102 | |
| 1920 | R | 2,830 | 4,174 | 7,049 | |
| 1916 | R | 1,953 | 2,368 | 4,362 | |
| 1912 | D | 1,685 | 1,075 | 3,964 | |
| 1908 | R | 1,864 | 2,360 | 4,295 | |
| 1904 | R | 1,683 | 2,179 | 4,073 | |
| 1900 | R | 1,938 | 2,213 | 4,249 | |
| 1896 | D | 2,002 | 1,874 | 3,926 | |
| 1892 | D | 1,251 | 1,173 | 3,152 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Grayson County logged an R+61.8 margin in the 2024 presidential race, placing it among the most one-sided counties in the state. Its roughly 24,000 residents are concentrated in small towns and rural hollows typical of western Appalachian Kentucky.
The Republican margin in Grayson County reached its widest at sixty-two points in 2024. The margin in 2024 was sixty-two points, in line with the county's deep historical pattern.
Grayson County's loyalty is rooted in its place. Median household income of $50,757, a 95% non-Hispanic-white share, and a population of 26,707 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 Potter County and Tioga County.