(Harrisburg, PA) -- The deadline to register to vote in Pennsylvania's May primary election is approaching. On May 18th, registered Democrats and Republicans in the state will vote for their party's nominees for various seats in the Pennsylvania Supreme Court, Superior Court, Commonwealth Court and more. Four ballot questions will also be on the primary election ballot. Pennsylvanians have until May 3rd to register to vote or change party affiliation. To register online, go to pavoterservices.pa.gov or you can register through mail or even in-person at a county voter registration office.