| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 34,418 | 75,435 | 110,667 | |
| 2020 | R | 37,519 | 70,412 | 108,922 | |
| 2016 | R | 31,795 | 58,970 | 93,796 | |
| 2012 | R | 37,830 | 44,938 | 83,667 | |
| 2008 | R | 41,886 | 45,021 | 87,901 | |
| 2004 | R | 37,187 | 42,635 | 80,547 | |
| 2000 | D | 32,648 | 30,658 | 65,236 | |
| 1996 | D | 28,524 | 22,046 | 58,066 | |
| 1992 | D | 19,174 | 17,902 | 49,086 | |
| 1988 | R | 15,437 | 21,195 | 36,863 | |
| 1984 | R | 12,204 | 21,279 | 33,487 | |
| 1980 | R | 8,858 | 12,115 | 22,032 | |
| 1976 | D | 7,717 | 5,793 | 13,732 | |
| 1972 | R | 2,110 | 6,296 | 8,409 | |
| 1968 | R | 1,524 | 2,053 | 5,964 | |
| 1964 | R | 2,320 | 2,337 | 4,657 | |
| 1960 | D | 1,960 | 1,809 | 3,769 | |
| 1956 | D | 1,435 | 1,295 | 2,730 | |
| 1952 | R | 1,104 | 1,279 | 2,383 | |
| 1948 | D | 825 | 441 | 1,672 | |
| 1944 | D | 1,002 | 346 | 1,348 | |
| 1940 | D | 1,151 | 381 | 1,532 | |
| 1936 | D | 1,115 | 313 | 1,428 | |
| 1932 | D | 1,097 | 258 | 1,355 | |
| 1928 | D | 701 | 661 | 1,383 | |
| 1924 | D | 300 | 59 | 401 | |
| 1920 | D | 622 | 132 | 818 | |
| 1916 | D | 446 | 38 | 560 | |
| 1912 | D | 272 | 18 | 383 | |
| 1908 | D | 260 | 57 | 339 | |
| 1904 | D | 172 | 12 | 201 | |
| 1900 | D | 252 | 18 | 286 | |
| 1896 | D | 231 | 37 | 278 | |
| 1892 | D | 227 | 0 | 310 | |
| 1888 | — | — | — | — | |
| 1884 | D | 1,040 | 270 | 1,310 | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Hernando County's population has grown steadily through retiree in-migration from Tampa's northern sprawl, and that demographic shift has coincided with a 37-point Republican presidential margin in 2024—among the largest in the I-75 corridor.
The shift began with civil rights. 2004 marked the realignment in Hernando County, by a seven points margin. The Republican margin reached its widest at fifty points in 1972. The 2024 margin was thirty-seven points.
The political shift has tracked, in Hernando County, the political shift of the South more broadly. A 76% non-Hispanic-white share, a median household income of $66,058, and a 12% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of St. Clair County and Pasco County.
