From left: St. Petersburg Mayor Ken Welch, Maria Scruggs, Brandi Gabbard, Charlie Crist, and Kevin Batdorf participate in the city’s first mayoral debate on Tuesday night. (Photos by Mark Parker/ Power Broker Magazine) St. Petersburg Mayor Ken Welch spent most of his first debate absorbing blows from challengers. He also landed some counterpunches. A capacity crowd of 125 people - dozens were turned away - attended Tuesday night’s mayoral debate, hosted by the St. Petersburg branch of the NAACP.