| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 780 | 3,874 | 4,765 | |
| 2020 | R | 890 | 3,898 | 4,923 | |
| 2016 | R | 719 | 3,437 | 4,529 | |
| 2012 | R | 1,223 | 3,136 | 4,531 | |
| 2008 | R | 1,407 | 3,002 | 4,560 | |
| 2004 | R | 1,328 | 3,149 | 4,574 | |
| 2000 | R | 1,249 | 2,925 | 4,373 | |
| 1996 | R | 1,631 | 2,155 | 4,408 | |
| 1992 | R | 1,398 | 1,668 | 4,051 | |
| 1988 | R | 1,482 | 2,253 | 3,808 | |
| 1984 | R | 1,232 | 2,813 | 4,120 | |
| 1980 | R | 1,555 | 2,642 | 4,618 | |
| 1976 | R | 1,593 | 1,844 | 3,450 | |
| 1972 | R | 925 | 2,200 | 3,127 | |
| 1968 | R | 1,035 | 1,613 | 2,967 | |
| 1964 | D | 1,890 | 1,470 | 3,360 | |
| 1960 | R | 1,558 | 1,771 | 3,329 | |
| 1956 | R | 1,499 | 1,848 | 3,347 | |
| 1952 | R | 1,364 | 2,148 | 3,524 | |
| 1948 | D | 1,465 | 1,366 | 2,853 | |
| 1944 | R | 1,544 | 1,776 | 3,320 | |
| 1940 | D | 1,849 | 1,758 | 3,622 | |
| 1936 | D | 1,730 | 1,546 | 3,406 | |
| 1932 | D | 1,893 | 1,430 | 3,624 | |
| 1928 | R | 932 | 2,206 | 3,256 | |
| 1924 | R | 972 | 1,383 | 2,791 | |
| 1920 | R | 694 | 1,405 | 2,139 | |
| 1916 | D | 1,276 | 806 | 2,197 | |
| 1912 | D | 785 | 500 | 1,765 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Platte County delivered an R+64.9 margin in the 2024 presidential race, reflecting the deep rural conservatism typical of Wyoming's ranching and agricultural heartland. Its small population of under 9,000 makes it a reliable bellwether for the state's eastern plains.
The Republican margin in Platte County reached its widest at sixty-five points in 2024. The margin in 2024 was sixty-five points, in line with the county's deep historical pattern.
Platte County's loyalty is rooted in its place. Median household income of $67,718, a 87% non-Hispanic-white share, and a population of 8,612 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 McDonald County and Martin County.
