| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 12,469 | 18,123 | 31,411 | |
| 2020 | R | 12,880 | 16,987 | 30,970 | |
| 2016 | R | 10,851 | 16,340 | 30,365 | |
| 2012 | R | 14,032 | 15,060 | 30,029 | |
| 2008 | D | 16,104 | 14,520 | 31,153 | |
| 2004 | R | 12,646 | 17,298 | 30,470 | |
| 2000 | R | 10,593 | 15,875 | 28,385 | |
| 1996 | R | 11,376 | 11,606 | 25,836 | |
| 1992 | R | 10,930 | 13,705 | 31,104 | |
| 1988 | R | 12,494 | 14,801 | 27,531 | |
| 1984 | R | 10,050 | 15,898 | 26,191 | |
| 1980 | R | 6,997 | 14,257 | 24,731 | |
| 1976 | R | 11,545 | 13,820 | 26,218 | |
| 1972 | R | 9,416 | 13,361 | 23,475 | |
| 1968 | R | 7,695 | 9,802 | 18,849 | |
| 1964 | D | 10,740 | 7,367 | 18,175 | |
| 1960 | R | 8,341 | 10,997 | 19,343 | |
| 1956 | R | 6,231 | 10,289 | 16,550 | |
| 1952 | R | 5,639 | 10,939 | 16,662 | |
| 1948 | D | 6,996 | 6,374 | 13,789 | |
| 1944 | D | 7,707 | 5,668 | 13,434 | |
| 1940 | D | 8,396 | 7,043 | 15,506 | |
| 1936 | D | 9,222 | 4,312 | 14,549 | |
| 1932 | D | 7,579 | 5,090 | 12,900 | |
| 1928 | R | 4,300 | 8,024 | 12,371 | |
| 1924 | R | 943 | 6,690 | 10,651 | |
| 1920 | R | 2,527 | 7,646 | 10,332 | |
| 1916 | D | 2,814 | 2,159 | 5,148 | |
| 1912 | D | 1,492 | 955 | 3,999 | |
| 1908 | R | 1,750 | 2,740 | 4,773 | |
| 1904 | R | 828 | 2,807 | 3,837 | |
| 1900 | R | 1,532 | 2,603 | 4,244 | |
| 1896 | R | 1,893 | 2,432 | 4,365 | |
| 1892 | R | 0 | 1,639 | 3,197 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Grand Forks County anchors a regional university economy in the Red River Valley but has trended decisively Republican in recent cycles, posting an R+18 margin in 2024 despite a sizable student and academic population.
The county's recent history is a story of close margins. The Democratic margin reached thirty-four points in 1936; the Republican margin reached fifty-four points in 1924. Most other elections have been decided by single-digit points.
Grand Forks County's demographics — a population of 72,923, a 83% non-Hispanic-white share, a median household income of $68,075 — situate the county close to national averages on several dimensions. The county's voting pattern over the last decade is most similar to that of Traill County and Richland County.
