What to KnowElection Day is here, and Pennsylvania is perhaps the most important swing state in the race for president between Democrat Kamala Harris and Republican Donald Trump.In Delaware, voters head to the polls to select a new governor and the state’s next United States Senator. In the Senate race, Democrat Lisa Blunt Rochester is running against Republican Eric Hansen. In the gubernatorial race, Republican Mike Ramone is running against Democrat Matt Meyer.Important races for the United States Senate are also underway in Pennsylvania — where incumbent Democrat Bob Casey faces challenger Dave McCormick — and in New Jersey, where Democratic Congressman Andy Kim is up against GOP nominee Curtis Bashaw.The Philadelphia District Attorney’s office has set up a hotline to report any irregularities at polling locations around the city. Voters can call 215-686-9641 with any concerns.Polls opened at 6 a.m. in New Jersey and at 7 a.m. in Pennsylvania and Delaware. Polls close in all three states at 8 p.m. Live election results for all key races in our area can be found at NBC10.com/results. Nationwide election updates: Follow the latest national election news here. Voters in Philadelphia and its surrounding Pennsylvania counties are at the center of the nation’s eye on Tuesday, as they could very well decide the next President of the United States. Local voters across our area, including Delaware and New Jersey, will decide a number of key national and statewide races this Election Day. Léelo en español aquí. NBC10 has reporters spread out across all three states as voters head to the polls. Watch our live streaming coverage at the top of this page all he way through midnight, and follow along below for live updates.