State Rep. Nikki Haley (R-Lexington) is leading in the latest Rasmussen poll with 30 percent of the vote. It’s a surprisingly commanding lead for Haley, who was in fourth in fundraising support just six weeks ago. But national endorsements from Mitt Romney and Sarah Palin have certainly elevated her star power.

It was long expected that Haley and Congressman Gresham Barrett would be fighting for a second spot on the run-off ballot. It looks like Barrett will now be battling for that slot with Attorney General Henry McMaster, who had long been seen as the frontrunner. McMaster was at 19 percent and Barrett was at 17 percent. Eighteen percent of those polled were undecided.

There wasn’t an ounce of good news in the poll for Lt. Gov. André Bauer the fourth person in the race. Support for his campaign fell from 17 percent in early March to 12 percent two months later. Worse, nearly one in five Republican primary voters polled have a “very unfavorable” opinion of Bauer, that’s compared to 7 percent very unfavorable for Barrett and 5 percent for Haley and McMaster.

Read the full poll results here.