With Romney's record of running the Olympics and the state of Massachusetts, on top of his Harvard education and business success, Feldman said the constant focus on his religion has to be galling to the candidate.

"This has got to be, has got to be, personally frustrating to him," Feldman said of the constant focus on Romney's religion. "He is the perfect candidate for this moment in time."

Feldman said if Romney loses the nomination it could be traced back to his religion, whereas if Sen. Barrack Obama, D-Ill., does not win the nomination for the Democratic ticket, it is not likely to be blamed on America not being ready for a black president.

But Time magazine national editor Amy Sullivan, who wrote about Romney's "evangelical problem" in 2005, said not enough of the country knows about Romney yet to really get a sense of whether his religion will be an issue or not.

"We don't know what's going to happen," Sullivan said.

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Contributing: Associated Press