Gov. Walker and Mary Burke both toured manufacturing companies Thursday.
The Government Accountability Board officials said Thursday it expects about 2.5 million people will vote Tuesday.
A group wants the judge to declare unconstitutional a law limiting coordination between third-party organizations and political candidates.
Attorney General J.B. Van Hollen plans to send teams to 13 cities, including Green Bay and Appleton.
A story has surfaced this week alleging the Democrat was fired from her family’s business.
Democrats believe the Republican attorney general candidate made inappropriate comments during the presentations.
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An online publication that supports conservative causes reported Burke was fired from Trek Bicycle.
Happ’s campaign issued a statement Wednesday saying Happ plans to vote at noon in her hometown of Jefferson.
The poll released Wednesday shows Schimel with 43 percent support among likely voters compared with 39 percent for Happ.