| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,748 | 12,839 | 17,036 | |
| 2020 | R | 3,872 | 12,243 | 16,619 | |
| 2016 | R | 3,080 | 11,336 | 15,832 | |
| 2012 | R | 4,469 | 8,680 | 13,613 | |
| 2008 | R | 5,079 | 7,869 | 13,264 | |
| 2004 | R | 4,073 | 8,325 | 12,633 | |
| 2000 | R | 3,439 | 6,993 | 11,223 | |
| 1996 | R | 3,745 | 4,699 | 10,070 | |
| 1992 | R | 3,594 | 5,042 | 11,522 | |
| 1988 | R | 4,708 | 5,588 | 10,447 | |
| 1984 | R | 3,996 | 7,146 | 11,356 | |
| 1980 | R | 2,861 | 7,659 | 11,458 | |
| 1976 | D | 5,241 | 4,921 | 10,462 | |
| 1972 | R | 3,312 | 5,494 | 9,177 | |
| 1968 | R | 3,156 | 4,465 | 8,115 | |
| 1964 | D | 5,173 | 2,955 | 8,138 | |
| 1960 | D | 4,866 | 4,028 | 8,895 | |
| 1956 | R | 2,628 | 5,232 | 7,890 | |
| 1952 | R | 2,079 | 6,309 | 8,426 | |
| 1948 | R | 2,521 | 3,607 | 6,394 | |
| 1944 | R | 1,850 | 3,537 | 5,415 | |
| 1940 | R | 2,889 | 5,499 | 8,428 | |
| 1936 | D | 5,612 | 1,857 | 8,090 | |
| 1932 | D | 5,548 | 1,828 | 7,430 | |
| 1928 | D | 3,946 | 2,881 | 6,853 | |
| 1924 | R | 265 | 2,377 | 5,370 | |
| 1920 | R | 632 | 4,618 | 5,347 | |
| 1916 | R | 1,835 | 2,785 | 4,942 | |
| 1912 | D | 1,017 | 1,011 | 3,618 | |
| 1908 | R | 873 | 2,021 | 2,976 | |
| 1904 | R | 321 | 1,474 | 1,825 | |
| 1900 | R | 536 | 1,056 | 1,599 | |
| 1896 | R | 393 | 752 | 1,148 | |
| 1892 | R | 0 | 596 | 981 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Morton County sits directly west of Bismarck and has delivered Republican presidential margins above 50 points in recent cycles, reflecting the deeply rural, majority-white demographic profile typical of the Missouri River corridor in western North Dakota.
The Republican margin in Morton County reached its widest at seventy-five points in 1920. The margin in 2024 was fifty-three points, in line with the county's deep historical pattern.
Morton County's loyalty is rooted in its place. Median household income of $79,382, a 87% non-Hispanic-white share, and a population of 33,777 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 Oliver County and Greeley County.
