Well, Ron Paul probably gets the most "grassroots support". He did well in Iowa, with a steady rise in the polls, unlike the surge/collapse dynamics of the other candidates, and the flat-line for Romney. In New Hampshire, it was a similar story. Now he's rising in the polls in South Carolina.
In the GE, he polls pretty much comparably as Mitt Romney, because he's able to pull in a lot of independents and even some disaffected Democrats with his libertarian position on social issues (which puts him to the left of Obama on a few) and his anti-interventionist position on foreign policy.
The man's no liberal by any means, but one can see why he offers a shakeup of American politics that so m any disaffected voters so desperately want. The only problem is that if his policies actually tried to be implemented, it would be a disaster, but that won't be a problem for him in South Carolina.
