| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 681 | 3,421 | 4,209 | |
| 2020 | R | 792 | 3,470 | 4,363 | |
| 2016 | R | 639 | 3,022 | 3,930 | |
| 2012 | R | 770 | 2,808 | 3,710 | |
| 2008 | R | 957 | 2,638 | 3,688 | |
| 2004 | R | 802 | 3,039 | 3,905 | |
| 2000 | R | 707 | 2,830 | 3,729 | |
| 1996 | R | 962 | 2,239 | 3,652 | |
| 1992 | R | 1,019 | 1,791 | 3,802 | |
| 1988 | R | 1,237 | 2,161 | 3,463 | |
| 1984 | R | 1,184 | 2,466 | 3,653 | |
| 1980 | R | 1,147 | 2,234 | 3,689 | |
| 1976 | R | 1,381 | 1,575 | 3,088 | |
| 1972 | R | 777 | 1,619 | 2,653 | |
| 1968 | R | 730 | 1,538 | 2,505 | |
| 1964 | D | 1,419 | 1,304 | 2,723 | |
| 1960 | R | 1,441 | 1,555 | 2,996 | |
| 1956 | R | 1,289 | 1,623 | 2,912 | |
| 1952 | R | 1,205 | 1,727 | 2,943 | |
| 1948 | D | 1,104 | 1,083 | 2,254 | |
| 1944 | D | 1,147 | 1,008 | 2,169 | |
| 1940 | D | 1,414 | 1,121 | 2,544 | |
| 1936 | D | 1,274 | 725 | 2,253 | |
| 1932 | D | 1,199 | 839 | 2,084 | |
| 1928 | R | 549 | 1,014 | 1,594 | |
| 1924 | R | 304 | 917 | 1,520 | |
| 1920 | R | 358 | 1,136 | 1,576 | |
| 1916 | D | 971 | 793 | 1,891 | |
| 1912 | D | 357 | 297 | 1,061 | |
| 1908 | R | 239 | 465 | 765 | |
| 1904 | R | 115 | 394 | 531 | |
| 1900 | R | 233 | 456 | 694 | |
| 1896 | D | 383 | 351 | 736 | |
| 1892 | R | 110 | 237 | 648 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Lake County covers nearly 8,000 square miles of high desert and rangeland, and its small, dispersed population has delivered Republican presidential margins above 60 points in recent cycles — among the widest gaps in the state.
The Democratic margin in Lake County peaked at twenty-four points in 1936. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixty-five points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Lake County's median household income of $62,787 sits well below state and national norms, and 15% 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 Powder River County and Owyhee County.