Live at 7 pm tonight: Gov. Rick Perry, Sen. Kay Bailey Hutchison and Wharton County GOP chairwoman Debra Medina, candidates for governor in the March 2 Texas Republican primary, face off. The forum is sponsored by KERA-TV, Dallas. Shelley Kofler is the moderator. Doug Dunbar (CBS11, Dallas) facilitates questions from Dallas and Tarrant County Republicans in the studio audience. The candidates also field questions from journalists María Renée Barillas (Univision) and Dave Montgomery (Fort Worth Star-Telegram).