Pennsylvania’s two largest cities will hold primaries Tuesday for high-profile municipal offices. Voters across the commonwealth will choose nominees for statewide appellate court judgeships. The election is a prelude to November, when voters could scramble partisan control of the state Supreme Court. Philadelphia District Attorney Larry Krasner faces a Democratic primary challenge from former Philadelphia Municipal Court Judge Pat Dugan. Pittsburgh Mayor Ed Gainey faces a Democratic primary challenge from Allegheny County Controller Corey O’Connor. In both contests, the eventual Democratic nominees will be heavily favored in the general election.