But Ron Paul will not get the Romney supporters either.
And the exit polls you talk about only show that they PREFER Ron Paul. Has nothing to do with if they would vote for Romney if Ron Paul was not on the ballot.
If I had a choice between a nice steak or chicken, I would choose a steak. However, it doesn't mean that I don't like chicken. I like chicken very much and would much rather have it then, say, spaghetti or pork chops. Al those polls tell us is that Romney is not steak. But he may be chicken.
Independents tend to be moderate...like Romney.
You may say that one data point is not enough, but you have none. Just a misinterpreted exit poll.