Rep. Dan Burton (R-Ind.) said he likes both men running for the GOP Senate nomination in Indiana and has no plans to get involved in their "fist fight."

Sen. Richard Lugar (R-Ind.) faces state Treasurer Richard Mourdock in what's expected to be a tough primary for the six-term incumbent. "I'm supporting Dick, there's two Dicks in the race," Burton said, dryly. 

Burton, also a longtime incumbent, said he knows what it's like to face a primary challenge.

"Last election, I had five guys running against me," he told The Ballot Box. "It was an anti-incumbent year; they beat me to death.

"I have enough problems in my own district without getting involved in a senatorial race," he said. "I like Dick Lugar; I like our state treasurer. They're both good guys.

"So, I'm going to do what my mother always told me, unless you have to be in a fist fight, stay out of it," he said. 

--Updated at 6:38 p.m.