BRAINERD, Minn. - State Sen. Paul Koering once fit neatly into the profile of socially conservative central Minnesota: abortion opponent, supporter of gun and property rights, outspoken supporter of veterans. But last year, Koering was the only Republican in the Senate to join Democrats in opposing an effort to force a floor vote on a constitutional gay marriage ban. That stirred up long-standing rumors at the Capitol about Koering's own sexuality, and within a few days he revealed that he was gay — a move the area's GOP chairman called "political suicide." In Tuesday's primary, he will find out if...