The 1848 gubernatorial election in Wisconsin was held on May 8, 1848. This was the election for the first Governor of Wisconsin, which became a U.S. state that year, as it was held concurrent with a public referendum to ratify the Constitution of Wisconsin. Democrat Nelson Dewey, of Grant County, won the election with nearly 56% of the vote. Dewey defeated Whig Party candidate John Hubbard Tweedy, of Milwaukee.