Pennsylvania’s top elections official says one-third of the state’s counties are advancing plans to install new voting systems ahead of 2020’s presidential election. Kathy Boockvar, Gov. Tom Wolf’s acting secretary of state, told lawmakers Tuesday that 21 of 67 counties have approved plans amid the administration’s push to adopt systems with voter-verifiable paper trails that are viewed as a hedge against hacking. Boockvar was testifying during a Senate committee hearing.