We’re not going to have a clear picture of results in Pennsylvania until well after midnight, the NewsHour’s Daniel Bush reports from on the ground in the Philadelphia area. But things from an election security standpoint, he said, are going “relatively smoothly.”

Pennsylvania is the largest battleground state in the Midwest, with 20 electoral votes, and both presidential campaigns consider it key to a victory after the state went for President Barack Obama in 2008 and 2012 and then flipped to hand Donald Trump a win in 2016.