| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 853 | 589 | 1,640 | |
| 2020 | D | 1,379 | 636 | 2,180 | |
| 2016 | D | 1,140 | 359 | 1,908 | |
| 2012 | D | 1,708 | 373 | 2,206 | |
| 2008 | D | 1,270 | 908 | 2,272 | |
| 2004 | R | 855 | 952 | 1,919 | |
| 2000 | R | 830 | 960 | 1,959 | |
| 1996 | D | 998 | 575 | 1,818 | |
| 1992 | R | 701 | 759 | 1,773 | |
| 1988 | R | 681 | 818 | 1,561 | |
| 1984 | D | 851 | 847 | 1,772 | |
| 1980 | D | 861 | 361 | 1,375 | |
| 1976 | R | 497 | 511 | 1,041 | |
| 1972 | D | 524 | 428 | 996 | |
| 1968 | D | 559 | 274 | 897 | |
| 1964 | D | 356 | 83 | 439 | |
| 1960 | D | 211 | 121 | 332 | |
| 1956 | — | — | — | — | |
| 1952 | — | — | — | — | |
| 1948 | — | — | — | — | |
| 1944 | — | — | — | — | |
| 1940 | — | — | — | — | |
| 1936 | — | — | — | — | |
| 1932 | — | — | — | — | |
| 1928 | — | — | — | — | |
| 1924 | — | — | — | — | |
| 1920 | — | — | — | — | |
| 1916 | — | — | — | — | |
| 1912 | — | — | — | — | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Kusilvak Census Area, home to the Yukon-Kuskokwim Delta's remote Yup'ik communities, voted Democratic by nearly 17 points in 2024 — an alignment rooted in Alaska Native political solidarity and subsistence-dependent livelihoods that federal policy directly shapes.
The Democratic margin in Kusilvak Census Area peaked at sixty-two points in 1964. By 2008 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixteen points, the most Democratic-leaning result in the county's modern history.
The economic context is the key. Kusilvak Census Area's median household income of $51,471 sits well below state and national norms, and 32% 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 Bethel Census Area and Nome Census Area.