Monday is the last day to register to vote in this month's primary election in Pennsylvania

HARRISBURG, Pa. (WPVI) -- Monday the last day to register to vote in this month's primary election in Pennsylvania.

If you haven't registered yet, you can do so in person at your county election office, or at a PennDOT facility along with other government agencies.

The last day to request a mail-in or absentee ballot is May 12th.

Those ballots must be received by your county elections office by 8 pm on May 19th which is primary day.

Polls will be open on May 19th from 7am until 8pm.

Pennsylvania has a closed primary system.

This means that Republican voters can vote only for Republican candidates and Democratic voters can vote only for Democratic candidates.