Last Marquette poll before election: Biden leads Trump by 5 points among likely Wisconsin voters

Margin unchanged from previous Marquette poll earlier this month

Former Vice President Joe Biden, left, and President Donald Trump. Forum News Service wire services

Democratic presidential nominee Joe Biden is leading President Donald Trump by 5 points among likely voters in Wisconsin, according to the final Marquette University Law School poll of the 2020 presidential election cycle.

Forty-eight percent of those surveyed said they support Biden, compared to 43% for Trump. Two percent of voters said they plan to support Libertarian candidate Jo Jorgensen, and 8% said they are still undecided, plan to vote for a candidate not named in the poll, or refused to answer.

The poll was conducted Oct. 21-25. It’s margin of error for likely voters is 4.4%. That means Biden's lead is within the margin of error .

The previous Marquette poll, released earlier this month, showed Biden leading Trump by 5 points among likely voters, 46% to 41%. Another 4% said they would vote for Jorgensen, and 8% said they were undecided, planned to vote for another candidate, or refused to answer.

Charles Franklin, director of the poll, pointed out Biden has led every Marquette poll since May by between 4 and 6 points.


"I’d say the most striking thing this year is how little things have changed despite a cacophony of events," Franklin said. "That is much more stability than we saw in 2016."

Undecided and third-party voters played a key role in the final polls of the 2016 presidential election, showing a lead for Hillary Clinton over Trump.

The final Marquette poll in 2016 showed Clinton leading Trump by 6 points among likely voters in Wisconsin, 46% to 40%, with 4% saying they planned to support Libertarian candidate Gary Johnson, 3% for Green Party candidate Jill Stein, and 7% who said they were undecided, planned to vote for a candidate who wasn’t named, or refused to answer.

Ultimately, Trump won 47% of the vote in Wisconsin compared to Clinton’s 46%. The majority of undecided voters shifted to Trump, and some who said they planned to support third-party candidates shifted their support to Trump as well. Johnson ended up winning 4% of the vote and Stein earned 1%.

Another statewide poll, released Monday by the Elections Research Center at the University of Wisconsin-Madison, showed Biden leading Trump by 9 points among likely voters in Wisconsin, with 3% of voters saying they were planning to support another candidate or were undecided. The margin of error on that poll was 4.1%, which means Biden’s lead was slightly outside the margin of error.

Wisconsin Public Radio can be heard locally on 91.3 KUWS-FM and at

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