Mitt Romney has reinvented himself over and over again since he began campaigning in 1994, but he says there limits to what he will do to get elected.

During a visit to his campaign headquarters in Michigan on Tuesday, a reporter asked the Republican presidential candidate why GOP voters were not enthusiastic about his candidacy.

"You know, it's very easy to excite the base with incendiary comments," the former Massachusetts governor explained. "We've seen throughout the campaign that if you are willing to say really outrageous things that are accusative and attacking President Obama that you're going to jump up in the polls."

"You know, I'm not willing to light my hair on fire to try and get support," Romney said. "I am who I am."

Romney later told a reporter that he was not going to set his hair ablaze no matter "how hard you ask."

"It would be a big fire, I assure you," he added.

Former Utah Gov. Jon Huntsman also told reporters that he wasn't going to "light my hair on fire" to get support before quitting the race last year.