MADISON, Wis. (AP) — Michelle Obama is coming to Milwaukee next week to campaign for Democratic gubernatorial candidate Mary Burke. The visit on Sept. 29 comes the same day that Republican New Jersey Gov. Chris Christie is to be campaigning across the state in Hudson, near the Minnesota border, for Gov. Scott Walker. No details about either event have been released. Burke’s campaign announced the visit on Monday and said more information would come out later. Polls show the race between Walker and Burke to be nearly even, with the election just six weeks away.