| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,147 | 3,961 | 7,355 | |
| 2020 | R | 3,192 | 3,885 | 7,312 | |
| 2016 | R | 2,232 | 2,928 | 5,829 | |
| 2012 | R | 2,628 | 2,687 | 5,532 | |
| 2008 | D | 2,817 | 2,524 | 5,490 | |
| 2004 | R | 2,374 | 2,695 | 5,159 | |
| 2000 | R | 1,753 | 2,151 | 4,249 | |
| 1996 | D | 1,724 | 1,387 | 3,789 | |
| 1992 | D | 1,474 | 1,102 | 3,680 | |
| 1988 | D | 1,748 | 1,356 | 3,162 | |
| 1984 | R | 1,552 | 1,736 | 3,339 | |
| 1980 | R | 1,373 | 1,416 | 3,095 | |
| 1976 | D | 1,436 | 1,102 | 2,652 | |
| 1972 | R | 1,153 | 1,288 | 2,645 | |
| 1968 | D | 1,221 | 968 | 2,380 | |
| 1964 | D | 1,758 | 653 | 2,414 | |
| 1960 | D | 1,269 | 1,032 | 2,306 | |
| 1956 | D | 1,193 | 1,014 | 2,209 | |
| 1952 | R | 978 | 1,072 | 2,050 | |
| 1948 | D | 1,067 | 707 | 1,842 | |
| 1944 | D | 968 | 668 | 1,647 | |
| 1940 | D | 1,292 | 765 | 2,079 | |
| 1936 | D | 1,863 | 406 | 2,310 | |
| 1932 | D | 934 | 444 | 1,462 | |
| 1928 | R | 473 | 631 | 1,127 | |
| 1924 | R | 207 | 533 | 1,022 | |
| 1920 | R | 247 | 409 | 776 | |
| 1916 | R | 451 | 489 | 979 | |
| 1912 | D | 262 | 251 | 830 | |
| 1908 | R | 143 | 310 | 516 | |
| 1904 | R | 61 | 297 | 434 | |
| 1900 | D | 203 | 175 | 388 | |
| 1896 | D | 252 | 122 | 378 | |
| 1892 | D | 99 | 91 | 229 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Skamania's economy revolves around tourism in the Columbia River Gorge, yet its sparse, timber-country population votes consistently Republican in federal contests, with the 2024 presidential margin landing at R+11.1.
The Democratic margin in Skamania County has rarely exceeded sixty-three points in modern history; the Republican margin has rarely exceeded fifty-four points. 2024 delivered the county to the Republican candidate by eleven points.
Skamania County's demographics resemble the country more than they resemble most counties. A 87% non-Hispanic-white share, a 8% poverty rate, and a median household income of $93,265 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Wahkiakum County and Hill County.
