Posted Tuesday, May 8, 2012 --- 6:40 a.m.

Here is the latest Wisconsin news from The Associated Press:

MADISON, Wis. (AP) -- Polls open today at 7 a.m. in a primary election. Milwaukee Mayor Tom Barrett is hoping to win the Democratic primary in the governor's recall election. If he does, he'll get a chance at a rematch with Wisconsin's Republican Governor Scott Walker. Voters will also cast ballots in a less prominent race for lieutenant governor.

MADISON, Wis. (AP) -- Democrats are trying to fend off challenges from fake candidates and move on to face three Republican state senators in next month's recall elections. The contests were sparked by Wisconsin Governor Scott Walker's divisive union rights restrictions and the senators' support for them. But first, the senators will need to get past four Republicans running as Democrats in today's primary.

MILWAUKEE (AP) -- A Milwaukee County sergeant who's accused of producing child pornography resigned from the sheriff's department. Philip Wentzel is a former spokesman for the department. The 44-year-old is accused of taking pictures of young girls who were sleeping or drugged at a campground.

MADISON, Wis. (AP) -- Nearly 20 state parks are developing plans to add or upgrade dozens of electric campsites. The effort's part of a larger $7 million state Department of Natural Resources plan to improve more than 200 publicly owned properties across the state.

Copyright 2012. The Associated Press.