HOUSTON (KTRK) -- For those who would like to run Houston, here's their chance to sell themselves to voters.Candidate 1-minute wrap-upChris Bell on his viability as a candidateSylvester Turner question for Steve CostelloBill King question to Marty McVeyMarty McVey question to Adrian GarciaAdrian Garcia on the Terry Goodwin caseSylvester Turner on prior mayoral runsBen Hall on prior mayoral runBill King on HEROMayor Annise Parker, who has been in office since 2010, cannot run for re-election due to term limits. Each mayor is limited to three two year terms.The last five mayors were re-elected multiple times.2010- Annise Parker2004-2010 Bill White1998-2004 Lee Brown1992-1998 Bob Lanier1982-1991 Kathy WhitmireHouston has a strong mayor-council form of government, which means the mayor has his/her hands in pretty much everything. Houston's mayor serves as the city's chief administrator and executive officer. The mayor is also responsible for managing the city and making sure all laws and ordinances are enforced.This race is on track to be the most expensive in the city's recent history, with candidates raising more than $7 million in the first half of the year.The mayoral race is non-partisan. Still, Houston's past five mayors have all been Democrats. The city hasn't had a republican mayor since James McConn, who served from 1978 - 1982.