(CNN) - As voters in Georgia head to the polls Tuesday in primary elections, surveys indicate the high-profile battle for the Republican gubernatorial nomination appears to be headed to a runoff.
The big question is whether an endorsement by Sarah Palin will turn another female candidate into a nominee.
Last week, the ex-Alaska governor and 2008 GOP vice presidential nominee backed former Georgia Secretary of State Karen Handel for governor. The endorsement appears to have helped propel Handel into the front-runner position in a three-way battle for the GOP nomination.
According to a Mason-Dixon survey released Sunday, 29 percent of likely Georgia GOP primary voters support Handel, with 22 percent backing state Insurance Commissioner John Oxendine, 20 percent supporting former U.S. Rep. Nathan Deal, 13 percent supporting former state Sen. Eric Johnson, and 13 percent undecided. Handel's advantage of 6 percentage points is within the poll's sampling error.