INDIANAPOLIS, Ind. (AP): Indiana Republican Rep. Todd Young has defeated former Sen. Evan Bayh in a Senate race that could be crucial to determining party control. The seat is now held by Republican Sen. Dan Coats, who is retiring.

An onslaught of stories about whether Bayh really lived in Indiana and his extended job search in his final year in office undercut his candidacy.

National groups have poured tens of millions of dollars into the Senate race, one of a half dozen nationally that could determine whether Democrats take over the Senate majority.

Young, a three-term congressman from southern Indiana, doesn’t have the name recognition of Bayh, whose father, Birch Bayh, was a senator for 18 years. But Young ran a strong race and was supported by outside groups.