Enthusiasm for voting in Wisconsin
Here is a review of Marquette Law School polling from August 2019 to August 2020 in Wisconsin. All polls are state-wide samples of registered voters, with about 800 respondents per poll (1000 in Feb.) and a margin of error of about +/- 4 percentage points. Details of each survey and full methodology statement are available at https://law.marquette.edu/poll/category/results-and-data/
Conclusion
There is very little difference in enthusiasm between Biden and Trump voters. Those who strongly approval of Trump’s handling of his job as president are a bit more “very enthusiastic” (about 8 points) than are those who strongly disapprove. Democrats are a a little more likely to say they are “very enthusiastic” than are Republicans, by about 5 points.
These results fluctuate modestly over time.
There is little evidence to support a clear enthusiasm advantage for either party.