(CNN) - The city of Houston could elect its first openly gay mayor in Saturday's election runoff, according to a new poll, which would make it the largest city in the country to elect an openly gay mayor.
City Controller Anise Parker leads attorney Gene Locke by 13 points, 49 percent to 36 percent according to the latest poll put out by Rice University in Houston. Fifteen percent of likely voters questioned said they were unsure who they would vote for.
Parker and Locke, who are both Democrats, face off for the second time Saturday because neither emerged with more than 50 percent of the vote in the November 3 election.
The poll, conducted December 7-9, has a sampling error of plus or minus 4.7 percent.