Openly gay Houston city controller Annise Parker will face Gene Locke in a bid for mayor, the Houston Chronicle reported.

Parker and City Attorney Locke were the two top vote-getters out of a field of seven in Tuesday's mayoral election, but with three strong candidates a runoff was almost certain.

With 92% of the vote counted, Parker is leading with 30%, followed by Locke with 25%. Trailing in third place is Peter Brown, who received 22% of the vote.

Parker was feeling confident the entire evening, telling supporters at her campaign party: “I intend to be the next mayor of Houston. I'm going to be in the runoff. I'm not going to speculate any other way.”

Portland is currently the largest U.S. city to be led by an openly gay mayor, Sam Adams. Parker is running to lead the nation's fourth largest city.

Parker's political resume includes a lengthy section on gay and lesbian activism. She helped organize Houston's early gay pride parades, served as president of the city's GLBT Political Caucus, and acted as a liaison between the gay community and the police.

“[I] spent 10 years as the most visible lesbian activist in Houston – in Texas – and I spent 10 years very active in civic clubs and on quality-of-life issues in Houston,” Parker told gay weekly in August. “At some point, I realized that I would get more accomplished from the inside than the outside.”

The fifty-three-year-old made history in 1997 when she became Houston's first openly gay city council member. She served three terms on the council, then moved on to city controller in 2003.

Previous to holding elected office, Parker worked in the oil and gas industry and co-owned a bookstore. Along with her partner, Kathy Hubbard, the couple is raising two adopted daughters and has also raised a foster son, who is now 32.

The Gay & Lesbian Victory Fund has endorsed Parker's candidacy for mayor. So has the historic and powerful Houston GLBT Political Caucus she once headed.