Romney avoids talking about Herman Cain's 'vulnerabilities'

Former Massachusetts Gov. Mitt Romney (R) refused to talk about opponent Herman Cain's vulnerabilities Friday.

In response to a question on Fox News's "Fox & Friends" about what Cain's vulnerabilities are, Romney said he wouldn't talk about Cain's weaknesses as a presidential candidate.

"Herman Cain's a good man and I respect him. I'm not going to look at his vulnerabilities. I'm going to talk about the things I need to do to make sure that my message is clear to the American people," Romney said Friday on Fox News.

Cain has recently experienced a surge in Republican primary polls and was the upset victor of a Florida straw poll in late September. While Romney has remained comfortably in the lead position or closely chasing Texas Gov. Rick Perry for the Republican presidential nomination, Cain was pegged early on as a long-shot candidate. But the former Godfather's Pizza CEO has done well in the last round of national polls.

Cain recently said he would be willing to accept the vice presidential nomination if it were offered to him.

"I would not say no to being vice president of the United States," Cain said.