Republican U.S. Senator Lugar of Indiana addresses supporters in a cafe in Crawfordsville, Indiana

 
Republican U.S. Senator Lugar of Indiana addresses supporters in a cafe in Crawfordsville, Indiana
Republican U.S. Senator Dick Lugar of Indiana addresses supporters in a cafe in Crawfordsville, Indiana in this file photo taken February 24, 2012. Voters in Indiana go to the polls on Tuesday to decide the fate of one of longest-serving U.S. senators in what is seen as a major test of strength for the conservative Tea Party movement. Lugar faces the first primary challenge in his 35-year political career in Washington and is now the underdog against Indiana state treasurer Richard Mourdock, a fiscal conservative who has surged in recent polls. REUTERS/Nick Carey/Files