In an online ad, Senate Democratic candidate Joe Donnelly’s campaign criticizes the way Republican Richard Mourdock attacked longtime Sen. Dick Lugar Lugar, R-In., in their primary battle.

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Mourdock upset the six-term Senator in the GOP primary earlier this week and the Indiana Senate race has been thrust into the national spotlight as a result. Earlier this week, the Indiana congressman told WFPL that Lugar voters have a home with his candidacy and welcomed their support.