HARRISBURG - Pennsylvania’s highest court granted a request Wednesday to wade into a fight over whether counties should count mail-in ballots when a voter’s signature doesn’t necessarily match the one on their registration.In its brief order, the state Supreme Court said it will decide the matter after a filings deadline in the case on Friday.In guidance last month to counties, Secretary of State Kathy Boockvar, a Democrat, told them that state law does not require or permit them to reject a mail-in ballot solely over a perceived signature inconsistency.MORE: More than 14M Americans have voted early in 2020 presidential election, data showsAfter President Donald Trump’s campaign contested that guidance in a federal court case, Boockvar.