May 1: Last day an elector may register to vote or make any changes to their voting record to be eligible for the Municipal Primary (must be received in the Lehigh County Board of Elections office by 4 p.m.; no postmarks will be accepted.)

May 9: Last day, under certain conditions, to file applications for official absentee or mail-in ballot due in the County Board of Elections by 5 p.m.

May 16: Last day to receive official absentee and mail-in ballots in Lehigh County Board of Elections by 8 p.m.

May 16: Primary Election Day; voting 7 a.m. to 8 p.m.