Polls in both states are open 7 a.m. to 8 p.m.
Representatives from the League of Women Voters will be at the 6abc studios from 7 a.m. to 8 p.m. to answer questions or concerns. Call 877-940-6222 for assistance.
Along with the Presidential Primary, races in Pennsylvania include US Senator and Attorney General.
If you want to make sure you know all the races you will be voting in and where your closest polling location is, here are a few websites to help you out:
Pennsylvania Polling Places: https://www.pavoterservices.state.pa.us/Pages/PollingPlaceInfo.aspx
Delaware Polling Places: https://ivote.de.gov/voterlogin.aspx
View Your Races: http://onyourballot.vote411.org/
New Jersey holds its primary on June 7th.