| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,315 | 2,667 | 4,119 | |
| 2020 | R | 1,483 | 2,771 | 4,367 | |
| 2016 | R | 1,098 | 2,202 | 3,644 | |
| 2012 | R | 1,294 | 1,995 | 3,488 | |
| 2008 | R | 1,467 | 1,916 | 3,501 | |
| 2004 | R | 1,201 | 2,019 | 3,344 | |
| 2000 | R | 932 | 1,896 | 3,038 | |
| 1996 | D | 1,197 | 1,091 | 2,817 | |
| 1992 | D | 963 | 773 | 2,557 | |
| 1988 | D | 972 | 972 | 2,021 | |
| 1984 | R | 935 | 1,232 | 2,210 | |
| 1980 | R | 802 | 1,108 | 2,100 | |
| 1976 | D | 814 | 776 | 1,692 | |
| 1972 | R | 560 | 815 | 1,527 | |
| 1968 | R | 596 | 608 | 1,387 | |
| 1964 | D | 931 | 526 | 1,459 | |
| 1960 | D | 921 | 623 | 1,546 | |
| 1956 | D | 830 | 662 | 1,493 | |
| 1952 | D | 754 | 687 | 1,450 | |
| 1948 | D | 824 | 473 | 1,340 | |
| 1944 | D | 792 | 518 | 1,315 | |
| 1940 | D | 1,247 | 590 | 1,849 | |
| 1936 | D | 1,130 | 320 | 1,516 | |
| 1932 | D | 1,035 | 322 | 1,445 | |
| 1928 | D | 732 | 640 | 1,399 | |
| 1924 | R | 349 | 507 | 1,470 | |
| 1920 | R | 505 | 592 | 1,359 | |
| 1916 | D | 913 | 581 | 1,723 | |
| 1912 | D | 609 | 286 | 1,688 | |
| 1908 | R | 393 | 467 | 990 | |
| 1904 | R | 297 | 511 | 931 | |
| 1900 | D | 830 | 423 | 1,272 | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Ferry County's sparse population is spread across forested highlands bordering Canada, and its lopsided presidential margins have widened steadily over the past two decades as rural realignment reshaped the inland Northwest.
The Democratic margin in Ferry County peaked at fifty-three points in 1936. By 2000 the county had flipped, voting Republican for the first time in many years. The 2024 margin was thirty-three points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Ferry County's median household income of $55,614 sits well below state and national norms, and 14% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Nez Perce County and Del Norte County.