| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 4,763 | 10,324 | 15,344 | |
| 2020 | R | 4,744 | 9,617 | 14,589 | |
| 2016 | R | 3,923 | 8,580 | 13,232 | |
| 2012 | R | 4,952 | 7,688 | 12,851 | |
| 2008 | R | 5,995 | 7,049 | 13,311 | |
| 2004 | R | 5,650 | 7,734 | 13,549 | |
| 2000 | R | 5,533 | 6,932 | 12,832 | |
| 1996 | D | 5,614 | 4,408 | 11,591 | |
| 1992 | D | 5,689 | 4,273 | 13,031 | |
| 1988 | R | 6,129 | 6,158 | 12,343 | |
| 1984 | R | 5,614 | 6,880 | 12,530 | |
| 1980 | R | 5,694 | 6,614 | 13,077 | |
| 1976 | D | 6,134 | 5,922 | 12,177 | |
| 1972 | R | 5,339 | 5,989 | 11,715 | |
| 1968 | D | 5,726 | 4,920 | 11,194 | |
| 1964 | D | 7,921 | 3,365 | 11,297 | |
| 1960 | D | 6,645 | 5,336 | 11,995 | |
| 1956 | R | 5,113 | 6,200 | 11,330 | |
| 1952 | R | 5,710 | 6,045 | 11,811 | |
| 1948 | D | 6,295 | 4,417 | 11,309 | |
| 1944 | D | 6,740 | 4,987 | 11,842 | |
| 1940 | D | 7,582 | 6,188 | 13,859 | |
| 1936 | D | 7,952 | 4,563 | 12,934 | |
| 1932 | D | 6,483 | 5,120 | 12,032 | |
| 1928 | R | 4,626 | 5,840 | 10,509 | |
| 1924 | R | 400 | 4,538 | 6,609 | |
| 1920 | R | 580 | 3,539 | 4,617 | |
| 1916 | R | 1,291 | 2,393 | 3,947 | |
| 1912 | R | 361 | 1,371 | 3,352 | |
| 1908 | R | 544 | 2,507 | 3,291 | |
| 1904 | R | 283 | 2,984 | 3,397 | |
| 1900 | R | 451 | 2,858 | 3,382 | |
| 1896 | R | 528 | 2,608 | 3,236 | |
| 1892 | R | 1,255 | 1,606 | 3,146 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Dickinson County, anchored by Iron Mountain in Michigan's Upper Peninsula, has shifted decisively rightward over the past decade, posting a 36-point Republican presidential margin in 2024 that reflects broader UP trends away from its old union-Democrat roots.
The unraveling was not abrupt. The Democratic margin in Dickinson County peaked at forty points in 1964; it narrowed steadily over the late twentieth century. The 2000 election delivered the county to the Republican party for the first time in many years, by a margin of eleven points. By 2024, the margin had settled into deep Republican territory.
The economic and demographic context is severe. Dickinson County's median household income of $65,156 is among the lowest of any county in the United States; 11% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of White County and Barbour County.