| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 704 | 2,350 | 3,112 | |
| 2020 | R | 786 | 2,460 | 3,331 | |
| 2016 | R | 681 | 2,208 | 3,153 | |
| 2012 | R | 1,253 | 1,899 | 3,255 | |
| 2008 | R | 1,494 | 1,722 | 3,307 | |
| 2004 | R | 1,321 | 2,466 | 3,856 | |
| 2000 | R | 1,093 | 2,430 | 3,779 | |
| 1996 | R | 1,191 | 1,678 | 3,294 | |
| 1992 | R | 1,186 | 1,917 | 4,127 | |
| 1988 | R | 1,616 | 2,471 | 4,149 | |
| 1984 | R | 1,367 | 2,895 | 4,387 | |
| 1980 | R | 1,239 | 3,101 | 4,718 | |
| 1976 | R | 2,274 | 2,810 | 5,209 | |
| 1972 | R | 1,801 | 3,317 | 5,203 | |
| 1968 | R | 1,686 | 2,574 | 4,596 | |
| 1964 | D | 3,198 | 1,961 | 5,167 | |
| 1960 | R | 2,460 | 3,348 | 5,810 | |
| 1956 | R | 1,887 | 3,077 | 4,977 | |
| 1952 | R | 1,891 | 4,012 | 5,944 | |
| 1948 | D | 2,666 | 2,406 | 5,155 | |
| 1944 | D | 2,903 | 2,410 | 5,361 | |
| 1940 | D | 3,711 | 2,924 | 6,655 | |
| 1936 | D | 4,139 | 2,040 | 6,481 | |
| 1932 | D | 3,636 | 1,911 | 5,590 | |
| 1928 | R | 2,141 | 3,324 | 5,472 | |
| 1924 | R | 588 | 2,783 | 4,715 | |
| 1920 | R | 1,405 | 3,925 | 5,359 | |
| 1916 | R | 1,400 | 1,469 | 2,897 | |
| 1912 | D | 975 | 615 | 2,485 | |
| 1908 | R | 1,185 | 1,389 | 2,643 | |
| 1904 | R | 743 | 1,870 | 2,671 | |
| 1900 | R | 1,321 | 1,732 | 3,130 | |
| 1896 | D | 1,807 | 1,687 | 3,546 | |
| 1892 | R | 0 | 954 | 2,598 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Pembina sits along the Manitoba line where sugar beets and grain dominate the economy, and its presidential margins have exceeded 50 points in recent cycles, reflecting a rural, agriculture-dependent electorate with little urban counterweight.
The Republican margin in Pembina County reached its widest at fifty-three points in 2024. The margin in 2024 was fifty-three points, in line with the county's deep historical pattern.
Pembina County's loyalty is rooted in its place. Median household income of $68,393, a 90% non-Hispanic-white share, and a population of 6,727 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 Cavalier County and Cass County.
