Democrats as of Monday have outspent Republicans on advertising in the Wisconsin Senate race, $93 million to $69 million, according to AdImpact, which tracks campaign ad spending. Baldwin's campaign accounts for more than a third of all Democratic spending on ads, while Hovde has been more dependent on outside groups.

New signs of a tightening race in Wisconsin are flashing warning signs for incumbent Democrat Sen. Tammy Baldwin as she looks to fend off a challenge from Trump-backed Eric Hovde, giving Republicans a boost in their efforts to take the upper chamber this fall.

Drop boxes are heavily embraced throughout Democratic strongholds in Dane and Milwaukee counties, but are hardly utilized in Republican municipalities.

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Despite Sunday's rain, burn permits are now required in parts of Wisconsin as drought conditions continue. The state Department of Natural Resources issued a special fire order that begins on Tuesday.

The Wisconsin Department of Natural Resources is reinstating burn permit in several counties, including portions of Dane, as dry conditions and elevated fire danger have persisted in the state this fall.