| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 16,599 | 24,997 | 42,216 | |
| 2020 | R | 16,365 | 24,308 | 41,298 | |
| 2016 | R | 14,225 | 21,498 | 37,818 | |
| 2012 | R | 18,581 | 19,704 | 38,900 | |
| 2008 | D | 21,710 | 16,581 | 39,052 | |
| 2004 | R | 18,950 | 20,592 | 40,071 | |
| 2000 | R | 15,936 | 17,803 | 35,761 | |
| 1996 | D | 14,650 | 12,666 | 32,500 | |
| 1992 | R | 13,208 | 13,843 | 36,436 | |
| 1988 | R | 16,074 | 16,549 | 32,848 | |
| 1984 | R | 12,118 | 20,525 | 32,882 | |
| 1980 | R | 13,804 | 17,987 | 34,467 | |
| 1976 | R | 14,728 | 15,479 | 30,957 | |
| 1972 | R | 10,415 | 14,806 | 26,980 | |
| 1968 | R | 10,921 | 11,795 | 24,427 | |
| 1964 | D | 15,378 | 8,388 | 23,787 | |
| 1960 | R | 10,483 | 14,414 | 24,930 | |
| 1956 | R | 6,412 | 15,091 | 21,583 | |
| 1952 | R | 6,914 | 14,707 | 21,749 | |
| 1948 | R | 7,999 | 8,073 | 16,247 | |
| 1944 | R | 6,861 | 9,569 | 16,520 | |
| 1940 | R | 8,574 | 9,654 | 18,402 | |
| 1936 | D | 9,982 | 4,902 | 15,953 | |
| 1932 | D | 9,215 | 4,100 | 13,621 | |
| 1928 | R | 6,167 | 6,655 | 12,988 | |
| 1924 | R | 548 | 3,469 | 11,442 | |
| 1920 | R | 1,051 | 6,863 | 9,721 | |
| 1916 | R | 2,625 | 2,954 | 5,865 | |
| 1912 | D | 2,523 | 1,742 | 5,336 | |
| 1908 | R | 2,498 | 3,013 | 5,917 | |
| 1904 | R | 1,673 | 4,002 | 5,971 | |
| 1900 | R | 1,878 | 3,135 | 5,131 | |
| 1896 | R | 1,877 | 2,839 | 4,813 | |
| 1892 | D | 2,220 | 1,779 | 4,089 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Wood County, anchored by Marshfield and Wisconsin Rapids, has shifted more than 20 points toward Republicans over the past two decades as its manufacturing and timber-dependent workforce realigned with the national rural trend.
The county's recent history is a story of close margins. The Democratic margin reached thirty-eight points in 1932; the Republican margin reached sixty points in 1920. Most other elections have been decided by single-digit points.
Wood County's demographics — a population of 74,004, a 91% non-Hispanic-white share, a median household income of $67,989 — 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 Oneida County and Marathon County.
