| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,439 | 4,756 | 7,381 | |
| 2020 | R | 2,568 | 4,532 | 7,277 | |
| 2016 | R | 2,147 | 4,000 | 6,715 | |
| 2012 | R | 3,024 | 3,305 | 6,517 | |
| 2008 | D | 3,394 | 3,248 | 6,822 | |
| 2004 | R | 3,117 | 3,767 | 7,017 | |
| 2000 | R | 2,458 | 3,380 | 6,320 | |
| 1996 | D | 2,814 | 2,129 | 5,915 | |
| 1992 | D | 2,578 | 2,155 | 6,359 | |
| 1988 | D | 3,105 | 2,920 | 6,071 | |
| 1984 | R | 2,913 | 3,536 | 6,489 | |
| 1980 | R | 3,101 | 3,715 | 7,416 | |
| 1976 | D | 3,787 | 3,023 | 6,948 | |
| 1972 | R | 2,892 | 3,548 | 6,600 | |
| 1968 | D | 2,998 | 2,247 | 5,465 | |
| 1964 | D | 3,894 | 1,630 | 5,534 | |
| 1960 | D | 3,204 | 2,537 | 5,759 | |
| 1956 | D | 2,947 | 2,408 | 5,359 | |
| 1952 | D | 2,802 | 2,726 | 5,615 | |
| 1948 | D | 3,402 | 1,759 | 5,608 | |
| 1944 | D | 3,330 | 1,525 | 4,905 | |
| 1940 | D | 3,886 | 1,857 | 5,841 | |
| 1936 | D | 3,736 | 1,258 | 5,155 | |
| 1932 | D | 2,743 | 1,212 | 4,310 | |
| 1928 | R | 1,198 | 2,506 | 3,838 | |
| 1924 | R | 146 | 1,126 | 3,609 | |
| 1920 | R | 768 | 2,320 | 3,822 | |
| 1916 | D | 1,004 | 868 | 2,145 | |
| 1912 | D | 423 | 244 | 1,872 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Pennington County sits in Minnesota's northwest corner, anchored by Thief River Falls and its large manufacturing base. Presidential margins here have trended sharply rightward over the past decade, reaching R+31.4 in 2024.
The Republican margin in Pennington County reached its widest at forty-one points in 1920. The margin in 2024 was thirty-one points, in line with the county's deep historical pattern.
Pennington County's loyalty is rooted in its place. Median household income of $77,325, a 89% non-Hispanic-white share, and a population of 13,791 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 Towner County and Polk County.
