Briefs: Motorcycle hits tree in Mt. Oliver, victim found nearby - Pittsburgh Tribune-Review Oakland Fourth candidate enters race for mayor An Oakland man filed paperwork to run for Pittsburgh mayor as a Libertarian, which makes four candidates for the city's top office. Tony Oliva, 27, filed Thursday to be a replacement candidate for Libertarian Mark Rauterkus, who withdrew from the mayor's race Wednesday. Rauterkus is running as a Libertarian for City Council in District 3 and for city controller. Democratic Mayor Luke Ravenstahl also faces Republican Mark DeSantis and Socialist Workers Party candidate Ryan Scott in the Nov. 6 election.