Republican candidate Richard Mourdock received an endorsement Monday for promising to limit his term if he is elected to the U.S. Senate.
The Term Limits America PAC threw their support behind Mourdock in his race against incumbent Senator Richard Lugar.
Mourdock has promised to only serve two terms in the Senate if he's elected.
Lugar has been in the Senate representing Indiana since 1977 and is the third most senior senator.
Lugar and Mourdock will square off in the May 8 primary.