| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,101 | 5,470 | 7,643 | |
| 2020 | R | 2,236 | 5,129 | 7,472 | |
| 2016 | R | 1,575 | 4,003 | 5,951 | |
| 2012 | R | 1,880 | 3,714 | 5,735 | |
| 2008 | R | 1,929 | 3,509 | 5,552 | |
| 2004 | R | 1,849 | 3,158 | 5,059 | |
| 2000 | R | 1,769 | 2,543 | 4,483 | |
| 1996 | D | 1,964 | 1,902 | 4,493 | |
| 1992 | D | 1,808 | 1,599 | 4,961 | |
| 1988 | R | 1,746 | 2,562 | 4,376 | |
| 1984 | R | 1,502 | 2,757 | 4,313 | |
| 1980 | — | — | — | — | |
| 1976 | — | — | — | — | |
| 1972 | — | — | — | — | |
| 1968 | — | — | — | — | |
| 1964 | — | — | — | — | |
| 1960 | — | — | — | — | |
| 1956 | — | — | — | — | |
| 1952 | — | — | — | — | |
| 1948 | — | — | — | — | |
| 1944 | — | — | — | — | |
| 1940 | — | — | — | — | |
| 1936 | — | — | — | — | |
| 1932 | — | — | — | — | |
| 1928 | — | — | — | — | |
| 1924 | — | — | — | — | |
| 1920 | — | — | — | — | |
| 1916 | — | — | — | — | |
| 1912 | — | — | — | — | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
La Paz County, anchored by Parker along the Colorado River, posted a 44-point Republican presidential margin in 2024 — among the widest in Arizona — driven by a sparse, rural electorate that has leaned heavily right for decades.
The Democratic margin in La Paz County peaked at four points in 1992. By 2000 the county had flipped, voting Republican for the first time in many years. The 2024 margin was forty-four points, the most Republican-leaning result in the county's modern history.
The economic context is the key. La Paz County's median household income of $49,478 sits well below state and national norms, and 18% 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 Gilchrist County and Candler County.