WISCONSIN —The Wisconsin governor’s race remains closely contested, with Democrat David Crowley holding a 49% to 46% advantage over Republican Tom Tiffany among likely voters in the latest Marquette Law School Poll released Wednesday. Another 5% of likely voters remain undecided.
The poll's margin of error is plus or minus 4.8 percentage points among likely voters.
The poll, conducted by the Marquette University Law School, shows a narrower gap than the August survey, when Crowley led Tiffany 49% to 44% among likely voters.
Among all registered voters, Crowley is supported by 46% and Tiffany by 45%, with 9% undecided. In August, the two candidates were tied at 44% among registered voters.
The latest poll shows strong support for both candidates within their respective parties. Among likely voters, 95% of Republicans support Tiffany, while 96% of Democrats support Crowley.
Independents remain less settled. Crowley receives support from 44% of independent likely voters, compared with 18% for Tiffany, while 38% of independents remain undecided.
The movement among independents and Republicans since August is notable.
Compared with the August poll, Republican support for Tiffany increased by 4 percentage points, while Democratic support for Crowley declined by 2 points. Among independents, support for Crowley fell by 11 points, while support for Tiffany increased by 2 points. At the same time, the share of independents who remain undecided increased by 8 points.
All of those comparisons are among likely voters.
The poll also found Democrats currently have an advantage in reported likelihood of voting.
The latest Marquette poll also found declining approval of President Donald Trump. Trump’s job approval stands at 38%, while 60% disapprove.
On economic issues, Wisconsin residents remain generally negative about the economy and continue to express concerns about inflation and the prices of gas and groceries.
The poll also examined views on data centers and industrial development, finding substantial opposition to data centers and mixed opinions about industrial development.
Respondents also expressed mixed views regarding the accuracy of election results.
The Marquette Law School Poll surveyed Wisconsin voters on a range of political and policy issues. Full poll results and methodology are available at the Marquette Law School Poll website.
Last Update: Sep 30, 2026 3:42 pm CDT
