Candidate for U.S. Senate Rep. Paul Broun, R-Ga., speaks during a forum Monday, Jan. 27, 2014, in Atlanta. Six of the GOP hopefuls used the forum sponsored by the Georgia Municipal Association to insist that their differences matter, even if it's not obvious. (AP Photo/John Bazemore)

The poll, which was commissioned by a progressive group, Better Georgia, shows some separation between Broun and the rest of the Republican primary field vying to succeed Sen. Saxby Chambliss (R-Ga.). Broun received 27 percent support, with Rep. Phil Gingrey at 14 percent, Rep. Jack Kingston at 13 percent, businessman David Perdue at 12 percent and former Georgia Secretary of State Karen Handel with 9 percent.

The race's Democratic frontrunner, Michelle Nunn, leads all but one of her potential Republican challengers in head-to-head matchups. Nunn and Broun are tied in the poll with 38 percent support.

There has been little nonpartisan polling in the state, but the results do underscore that Nunn has a decent shot at capturing the seat in a state that Democrats hope will tilt in their favor as Georgia undergoes demographic changes.