Former President Bill Clinton will focus his comments in Wisconsin on Friday on the getting Democrats out to vote early starting Monday.
President Barack Obama's campaign on Wednesday said that would be the focus of Clinton's speech during a campaign stop in Green Bay. Earlier in the day, first lady Michelle Obama plans to make pitches for early voting in Racine and Wausau.
The latest Marquette University Law School poll released Wednesday shows Obama and Republican Mitt Romney in a dead heat. Obama was up 49 percent to 48 percent, but that is within the poll's 3.4 percentage point margin of error.
The poll of 870 likely voters was done Oct. 11 through Sunday.
Three recent polls show similar results in Wisconsin. The numbers indicate Romney is gaining ground after the first debate.
"Not only did we see a big movement in Gov. Romney's direction after that first debate, but we also see the impact of whether you watched or not. Among those who watched debate, Romney holds a 50 to 48 advantage, where among those who did not watch the debate, Obama still holds an advantage 50 to 42," said Charles Franklin, director of the Marquette Law School poll.
According to the latest Marquette University Law School poll, vice presidential nominee Paul Ryan's debate performance didn't hurt his numbers. His favorability went up following last week's debate while Vice President Joe Biden's favorability went down.
Wisconsin has not gone for a Republican presidential candidate since Ronald Reagan in 1984.