| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 41,205 | 36,605 | 79,540 | |
| 2020 | D | 40,588 | 34,174 | 76,562 | |
| 2016 | D | 27,707 | 25,905 | 61,690 | |
| 2012 | D | 27,236 | 24,387 | 54,078 | |
| 2008 | D | 32,669 | 25,193 | 58,630 | |
| 2004 | R | 21,421 | 22,628 | 44,541 | |
| 2000 | R | 14,899 | 15,423 | 31,755 | |
| 1996 | D | 13,081 | 11,015 | 26,448 | |
| 1992 | D | 10,951 | 8,491 | 23,574 | |
| 1988 | R | 9,332 | 9,411 | 19,011 | |
| 1984 | R | 7,080 | 9,005 | 16,246 | |
| 1980 | R | 4,740 | 6,762 | 12,582 | |
| 1976 | D | 5,072 | 4,110 | 9,269 | |
| 1972 | R | 3,293 | 3,507 | 6,979 | |
| 1968 | D | 2,609 | 1,959 | 4,728 | |
| 1964 | D | 3,332 | 1,077 | 4,420 | |
| 1960 | D | 2,672 | 1,447 | 4,119 | |
| 1956 | R | 1,574 | 1,979 | 3,554 | |
| 1952 | R | 1,647 | 1,795 | 3,448 | |
| 1948 | D | 1,851 | 1,675 | 3,539 | |
| 1944 | R | 1,354 | 1,439 | 2,795 | |
| 1940 | D | 2,060 | 1,990 | 4,051 | |
| 1936 | D | 2,094 | 1,800 | 3,898 | |
| 1932 | D | 1,808 | 1,562 | 3,378 | |
| 1928 | R | 1,159 | 1,700 | 2,860 | |
| 1924 | R | 1,096 | 1,587 | 2,712 | |
| 1920 | R | 884 | 1,194 | 2,078 | |
| 1916 | D | 734 | 611 | 1,345 | |
| 1912 | R | 126 | 211 | 920 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Sandoval County sits northwest of Albuquerque and has urbanized rapidly, with population growth pulling its presidential margins from double-digit Democratic leads toward single digits over the past decade.
The county's recent history is a story of close margins. The Democratic margin reached fifty-one points in 1964; the Republican margin reached nineteen points in 1928. Most other elections have been decided by single-digit points.
Sandoval County's demographics — a population of 153,604, a 51% non-Hispanic-white share, a median household income of $86,636 — situate the county close to national averages on several dimensions. The county's voting pattern over the last decade is most similar to that of Peoria County and Boone County.
