In the May 20 primary, Pittsburgh voters will choose Democratic and Republican nominees for the city’s top office in a rare instance of competitive races in both parties. Here, find highlights on Corey O’Connor, Allegheny County controller. The post Pittsburgh’s mayoral candidates: Corey O’Connor appeared first on Pittsburgh's Public Source. PublicSource is a nonprofit news organization serving the Pittsburgh region. Visit www.publicsource.org to read more.