Republican Senate candidate Richard Mourdock is trying to distance himself from the tea party.
When Democratic opponent Joe Donnelly called him an "unapologetic tea party leader" during their debate Monday night in Indianapolis, Mourdock questioned the label and said he's run as a Republican.
Mourdock also is fighting his portrayal by Donnelly as a partisan politician. In response to a question, he says he's worked with Democrats to set up a college savings plan for Indiana parents.
Donnelly says he's worked with Republican colleagues on a veterans center in South Bend and to keep Air Force fighter jets in Fort Wayne.
Libertarian Andrew Horning also participated in the debate.
Indiana's Senate battle is one of a handful of tight races that will decide whether Democrats or Republicans control the Senate.