I want them to go on national TV and start questioning someone's religion. By doing so those people lose credibility. By doing so they harm the GOP.
Best bet is to shut them up, for the good of the party if nothing else.
Second these people will not go on TV, they will talk among themselves and if Romney is the nominee they will not vote. I do not support their position, though I dislike Romney on political grounds, but I do understand how they will react. Frankly I don't see a problem because the Governor will not get the nomination.
A bigot is a prejudiced person who is intolerant of any opinions differing from their own.
Intolerance is the lack of ability or willingness to tolerate something.
In a social or political sense, intolerance is the absence of tolerence.
Just because a person doesn't want to vote for somebody who believes in something they consider to be false, does not make that person a bigot. Nor does it make them intolerant. It makes them an individual who is exercising their free will to use their own God given right to decide for themselves.