| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 954 | 5,645 | 6,803 | |
| 2020 | R | 998 | 5,548 | 6,719 | |
| 2016 | R | 651 | 4,090 | 5,713 | |
| 2012 | R | 810 | 4,907 | 5,802 | |
| 2008 | R | 1,065 | 4,700 | 5,880 | |
| 2004 | R | 741 | 4,965 | 5,769 | |
| 2000 | R | 699 | 4,242 | 5,088 | |
| 1996 | R | 1,114 | 3,042 | 4,835 | |
| 1992 | R | 903 | 2,333 | 4,954 | |
| 1988 | R | 1,178 | 3,401 | 4,652 | |
| 1984 | R | 818 | 4,006 | 4,853 | |
| 1980 | R | 926 | 4,167 | 5,253 | |
| 1976 | R | 1,445 | 2,581 | 4,167 | |
| 1972 | R | 819 | 2,621 | 4,270 | |
| 1968 | R | 961 | 2,297 | 3,925 | |
| 1964 | D | 1,970 | 1,945 | 3,915 | |
| 1960 | R | 1,887 | 2,230 | 4,117 | |
| 1956 | R | 1,535 | 2,513 | 4,048 | |
| 1952 | R | 1,500 | 2,710 | 4,213 | |
| 1948 | D | 2,014 | 1,777 | 3,811 | |
| 1944 | D | 2,116 | 1,755 | 3,871 | |
| 1940 | D | 2,556 | 1,996 | 4,554 | |
| 1936 | D | 2,904 | 1,423 | 4,366 | |
| 1932 | D | 2,830 | 1,498 | 4,329 | |
| 1928 | D | 1,933 | 1,674 | 3,619 | |
| 1924 | R | 530 | 1,662 | 3,669 | |
| 1920 | R | 1,061 | 1,994 | 3,055 | |
| 1916 | D | 2,695 | 1,654 | 4,550 | |
| 1912 | R | 1,911 | 3,071 | 6,871 | |
| 1908 | R | 2,854 | 3,920 | 7,201 | |
| 1904 | R | 1,278 | 3,869 | 5,483 | |
| 1900 | R | 2,153 | 2,174 | 4,379 | |
| 1896 | D | 1,526 | 121 | 1,655 | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Fremont County, tucked against the Montana border in eastern Idaho, recorded an R+68.9 presidential margin in 2024—among the widest in the state—reflecting a rural, agriculture-dependent electorate with minimal urban counterweight.
The Republican margin in Fremont County reached its widest at seventy-three points in 2004. The margin in 2024 was sixty-nine points, in line with the county's deep historical pattern.
Fremont County's loyalty is rooted in its place. Median household income of $72,683, a 85% non-Hispanic-white share, and a population of 13,943 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 Cassia County and Smith County.
