INDIANAPOLIS - Some big name out-of-state talent was in Indianapolis Wednesday to help Republican U.S. Senate candidate Richard Mourdock. 

But Mourdock also had to answer questions about a campaign pamphlet that appears to have angered the man he defeated, Sen. Richard Lugar.  

Senators John McCain and Lindsey Graham joined Mourdock for a session with local business owners, but the specter of Lugar dominated much of the session.

Graham and McCain talked to the business people about cutting government spending, reducing the national debt and repealing the health care law.

But they also made a strong appeal to Republicans still angry at Mourdock for defeating Lugar in the May primary, asking them to vote for Mourdock to help give Republicans a Senate majority.

"To the Lugar voter, your country needs you to vote," said Graham, R-South Carolina. "And based on Richard Lugar's representation of Indiana for a very long time, Richard Mourdock is so much closer to Richard Lugar than the other gentleman. One vote, please vote for Richard Mourdock, because your country needs you to stand up and be counted."

"This race could determine as to who is in the majority in the United States Senate," said McCain, R-Arizona.  "So it 's larger than the choice that was made during the primary."

But Lugar's support remains a touchy issue.

An independent political action committee run by Republican attorney Jim Bopp is circulating a mailer touting Lugar passing the torch to Mourdock.

But aides to Lugar, whose support for Mourdock has been lukewarm, are objecting to the mailer, saying it was done without Lugar's authorization or consultation.

Lugar aide Andy Fisher said, "During the primary, Mourdock and his supporters perpetuated misleading statements about Senator Lugar. Unfortunately, that has continued with this mailer."

Mourdock said he didn't authorize the mailer.

"I haven't seen it," said Mourdock. "It's been described to me. But, no, I haven't had any contact with anyone. My only thought was, independent expenditure campaigns, as always, get to do what they do. And, as I say, I found out about the flyer when I was doing an interview last night."

Meanwhile, Democratic candidate Joe Donnelly campaigned in his home territory in northern Indiana.

Donnelly is currently trying to combat an impending onslaught of negative advertising by the American Crossroads super PAC, which is spending $2 million on ads in the coming two weeks.