Rick Santorum Backs Richard Mourdock in Indiana Senate Race By Shushannah Walshe | ABC OTUS News Rick Santorum has weighed in on the fierce primary battle in the Indiana senate race. The former presidential candidate tweeted his support of State Treasurer Richard Mourdock over longtime Sen. Dick Lugar. @RickSantorum: I encourage Hoosiers to help GOTV for @RichardMourdock. If I lived in Indiana he'd have my vote in Tuesday's #INSen race. Lugar has held the seat since 1976, but Tea Party favorite Richard Mourdock is waging a serious challenge and is leading in state polls. Mourdock also has the backing of...