Polls closed at 8 p.m. in Pennsylvania and Delaware, where two of five states held presidential primaries Tuesday, along with numerous state-level and municipal elections.
In Pennsylvania, Republican candidates Donald Trump, U.S. Sen. Ted Cruz, and Ohio Gov. John Kasich are vying for 17 dedicated delegates while 54 other delegates will be able to pick their own choice at the convention later this year. Democratic candidates Hillary Clinton and U.S. Sen. Bernie Sanders will receive proportional numbers of delegates based on the percent of votes they win.
In Delaware, a winner-take-all state, the Republican candidates are vying for 16 delegates and the Democrats are trying for 31 delegates.
Other important races include Pennsylvania's Democratic primary for a U.S. Senate seat. Four candidates are in the running for the chance to compete against incumbent Pat Toomey. Toomey is seeking a second term.
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Long-embattled Pennsylvania Attorney General Kathleen Kane is not seeking re-election, and three Democrats and two Republicans are fighting to become their party's nominees to replace her.
All of Pennsylvania's state House and U.S. House seats are up for grabs. The highlight race of those is the 2nd Congressional District, where indicted U.S. House Rep. Chaka Fattah, seeking a 12th term, is facing his toughest competition in years. He faces federal racketeering charges in a trial expected to begin next month.
Delaware's election is limited to the presidential primaries, as their official state primary is scheduled for September.
For all election results, go to NBCPhiladelphia.com's Election page.