| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 9,386 | 8,110 | 18,226 | |
| 2020 | D | 10,392 | 7,745 | 18,658 | |
| 2016 | D | 8,619 | 6,376 | 16,452 | |
| 2012 | D | 10,857 | 5,430 | 16,756 | |
| 2008 | D | 11,676 | 4,818 | 16,965 | |
| 2004 | D | 9,307 | 6,381 | 16,084 | |
| 2000 | D | 8,967 | 6,299 | 16,703 | |
| 1996 | D | 11,199 | 3,909 | 17,677 | |
| 1992 | D | 9,960 | 3,491 | 18,146 | |
| 1988 | D | 11,422 | 5,043 | 16,687 | |
| 1984 | D | 11,095 | 6,637 | 18,010 | |
| 1980 | D | 9,721 | 7,301 | 19,377 | |
| 1976 | D | 11,377 | 7,506 | 19,110 | |
| 1972 | D | 11,704 | 7,967 | 20,404 | |
| 1968 | D | 12,626 | 5,488 | 19,617 | |
| 1964 | D | 15,751 | 4,873 | 21,239 | |
| 1960 | D | 13,754 | 7,290 | 21,190 | |
| 1956 | R | 11,475 | 11,619 | 23,094 | |
| 1952 | D | 13,114 | 10,196 | 23,458 | |
| 1948 | D | 12,715 | 7,305 | 21,335 | |
| 1944 | D | 13,228 | 7,610 | 21,040 | |
| 1940 | D | 17,467 | 7,932 | 25,734 | |
| 1936 | D | 17,697 | 4,528 | 22,623 | |
| 1932 | D | 13,626 | 6,792 | 21,834 | |
| 1928 | D | 11,228 | 9,456 | 21,103 | |
| 1924 | R | 5,393 | 6,520 | 18,814 | |
| 1920 | R | 6,394 | 10,074 | 18,198 | |
| 1916 | D | 13,084 | 6,757 | 21,547 | |
| 1912 | D | 4,542 | 2,232 | 11,896 | |
| 1908 | D | 6,255 | 4,618 | 13,656 | |
| 1904 | D | 5,686 | 5,149 | 14,274 | |
| 1900 | D | 12,101 | 3,873 | 16,310 | |
| 1896 | D | 9,992 | 1,275 | 11,296 | |
| 1892 | R | 2,648 | 3,251 | 8,426 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
One of Montana's few reliably Democratic counties, Silver Bow anchors its leftward lean in Butte's century-old labor movement and a working-class Irish Catholic demographic identity that has proven durable even as rural Montana has trended sharply Republican.
The Democratic margin in Silver Bow County reached its widest at seventy-seven points in 1896. The margin in 2024 was seven points — still decisive.
Silver Bow County's loyalty is rooted in its place. Median household income of $61,754, a 91% non-Hispanic-white share, and a population of 35,785 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 Deer Lodge County and Costilla County.
