| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 91,731 | 59,080 | 156,872 | |
| 2020 | D | 90,277 | 61,563 | 158,672 | |
| 2016 | D | 63,156 | 49,018 | 128,770 | |
| 2012 | D | 67,277 | 52,846 | 124,101 | |
| 2008 | D | 68,624 | 53,297 | 124,337 | |
| 2004 | D | 60,796 | 55,608 | 118,670 | |
| 2000 | D | 50,302 | 46,427 | 102,867 | |
| 1996 | D | 44,167 | 35,304 | 91,487 | |
| 1992 | D | 34,442 | 29,340 | 88,568 | |
| 1988 | R | 33,748 | 34,743 | 69,649 | |
| 1984 | R | 29,681 | 36,101 | 66,713 | |
| 1980 | R | 20,893 | 29,420 | 60,296 | |
| 1976 | D | 25,701 | 23,124 | 50,750 | |
| 1972 | R | 17,011 | 25,831 | 45,446 | |
| 1968 | D | 22,273 | 14,520 | 39,815 | |
| 1964 | D | 26,904 | 10,702 | 37,714 | |
| 1960 | D | 19,662 | 17,459 | 37,302 | |
| 1956 | D | 19,641 | 17,986 | 37,685 | |
| 1952 | D | 20,531 | 16,876 | 37,596 | |
| 1948 | D | 19,538 | 9,869 | 30,678 | |
| 1944 | D | 24,016 | 11,224 | 35,491 | |
| 1940 | D | 13,861 | 5,525 | 19,596 | |
| 1936 | D | 12,414 | 3,440 | 16,347 | |
| 1932 | D | 10,002 | 3,465 | 14,173 | |
| 1928 | R | 3,668 | 6,544 | 10,392 | |
| 1924 | R | 490 | 3,954 | 8,750 | |
| 1920 | R | 1,350 | 4,989 | 10,098 | |
| 1916 | D | 3,479 | 2,638 | 6,974 | |
| 1912 | R | 969 | 1,224 | 6,082 | |
| 1908 | R | 850 | 1,819 | 3,241 | |
| 1904 | R | 320 | 1,736 | 2,509 | |
| 1900 | R | 489 | 880 | 1,506 | |
| 1896 | D | 728 | 728 | 1,489 | |
| 1892 | R | 370 | 438 | 1,266 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Home to Naval Base Kitsap, one of the largest naval installations in the U.S., the county pairs a substantial military workforce with suburban growth from Seattle commuters, producing consistent double-digit Democratic margins in recent cycles.
The Democratic margin in Kitsap County reached its widest at fifty-five points in 1936. The margin in 2024 was twenty-one points — still decisive.
Kitsap County's loyalty is rooted in its place. Median household income of $104,158, a 75% non-Hispanic-white share, and a population of 277,881 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 Cumberland County and Snohomish County.
