Richard Earl Mourdock is an American politician who served as treasurer of the state of Indiana from 2007 to 2014. Running with the support of the Tea Party movement, he defeated six-term incumbent U.S. Senator Richard Lugar in the May 2012 Republican primary election for U.S. Senate. He lost the November 6, 2012 general election for Lugar's seat to Democratic congressman Joe Donnelly.

Richard Green Lugar KBE was an American politician who served as a United States Senator from Indiana from 1977 to 2013. He was a member of the Republican Party.