In December 2012, Peduto officially launched his third mayoral campaign, announcing that he would challenge Luke Ravenstahl in the 2013 mayoral primary, and was immediately endorsed by Allegheny County Executive Rich Fitzgerald.
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Among those he has represented in election matters are Allegheny County Controller Chelsa Wagner, State Senator Jim Ferlo, State Representative Erin Molchany and Pittsburgh City Councilman and Mayoral candidate Bill Peduto.