Mamdani celebrates victory in 'reborn' New York City

Accompanied by her husband and children, New Jersey's Democratic nominee for governor Mikie Sherrill appeared at a Montclair voting center to cast her ballot and address the press.

Sherrill sought to assure voters that it is currently safe to cast ballots throughout the state, after multiple polling places temporarily closed in northern New Jersey after precincts fielded emailed bomb threats later deemed to be not credible, prompting election officials to direct some voters to other polling places.

"We’ve checked out all the bomb threats. There are no credible ones yet. Law enforcement is working overtime to keep our elections safe, so I don't see any threat to voting," Sherrill said. She called the scare an "attempt to suppress the vote."

-ABC News' Emily Change and Lucien Bruggeman

Just moments after casting his ballot on the morning of Election Day, New York City mayoral Democratic nominee Zohran Mamdani proudly branded an "I voted" sticker and emphasized his vision to "usher in a new era in this city."

"Today is Election Day. It is a day that we have been dreaming of for more than a year," he began. "We are on the brink of making history in our city, on the brink of saying goodbye to a politics of the past."

Mamdani emphasized his platform centered on affordability, touting his plan to "transform the most expensive city of the United States of America into one that's affordable for each and every person that calls it home."

Asked by ABC News' Aaron Katersky on what he would say to New Yorkers concerned that President Donald Trump will follow through on his threats, Mamdani reiterated his resolve to stand up to Trump and argued that the president's words sometimes hold no weight.

"I look forward to representing those New Yorkers, and look forward to fighting for every single dollar this city is owed. What we see in the language of Donald Trump is a premise, as if it is his decision on whether or not to fund the city the very money that this city is owed ... That means using the courts, that means using the bully pulpit, that means ensuring that we actually follow the letter of the law," he said.

Mamdani is facing off against former Gov. Andrew Cuomo, a Democrat who is running as an independent, and Republican candidate Curtis Sliwa, along with some other independent and third-party candidates.

-ABC News' Emily Chang

It's Election Day in America, and voters across the country are heading to the polls in statewide and local elections.

It's the first major election cycle since President Donald Trump's return to the White House. The results from Tuesday's races will give voters an opportunity to weigh in on the state of the country and their communities.

Trump joined election eve tele-rallies supporting Republican candidates in Virginia and New Jersey, where he focused on energy costs and crime. He also threw out an eleventh-hour endorsement in New York City's mayoral election, urging voters to support Andrew Cuomo over Zohran Mamdani.