Polls closed in Pennsylvania, Georgia and North Carolina, some of the closely fought battlegrounds expected to decide the election, but the results there were too early to call, as balloting continued in other parts of the country. On Election Day, tens of millions of Americans added their ballots to the 84 million cast early as they chose between two candidates with drastically different temperaments and visions for the country.

Trump won Florida, a one-time battleground that has shifted heavily to Republicans in recent elections. He also notched early wins in reliably Republican states such as Kentucky, Tennessee and Indiana, while Harris took Democratic strongholds like Vermont, Massachusetts and Maryland.

The fate of democracy appeared to be a primary driver for Harris' supporters, a sign that the Democratic nominee's persistent messaging in her campaign's closing days accusing Trump of being a fascist may have broken through, according to AP VoteCast. The expansive survey of more than 110,000 voters nationwide also found a country mired in negativity and desperate for change. Trump's supporters were largely focused on immigration and inflation -- two issues that the former Republican president has been hammering since the start of his campaign.

Those casting Election Day ballots mostly encountered a smooth process, with isolated reports of hiccups that regularly happen, including long lines, technical issues and ballot printing errors.

Harris has promised to work across the aisle to tackle economic worries and other issues without radically departing from the course set by President Joe Biden. Trump has vowed to replace thousands of federal workers with loyalists, impose sweeping tariffs on allies and foes alike, and stage the largest deportation operation in U.S. history.

Harris and Trump entered Election Day focused on seven swing states, five of them carried by Trump in 2016 before they flipped to Biden in 2020: the "blue wall" of Pennsylvania, Michigan and Wisconsin as well as Arizona and Georgia. Nevada and North Carolina, which Democrats and Republicans respectively carried in the last two elections, also were closely contested.

Trump voted in Palm Beach, Florida, near his Mar-a-Lago club, and said afterward that he was feeling "very confident."

Harris, the Democratic vice president, did phone interviews with radio stations in the battleground states, then visited Democratic National Committee headquarters in Washington carrying a box of Doritos -- her go-to snack.

"This truly represents the best of who we are," Harris told a room of cheering staffers. She was handed a cellphone by supporters doing phone banking, and when asked by reporters how she was feeling, the vice president held up a phone and responded, "Gotta talk to voters."

The closeness of the race and the number of states in play raised the likelihood that, once again, a victor might not be known on election night.

Trump said Tuesday that he had no plans to tell his supporters to refrain from violence if Harris wins, because they "are not violent people." His angry supporters stormed the U.S. Capitol on Jan. 6, 2021, after Trump tried to overturn his loss in 2020. Asked Tuesday about accepting the 2024 race's results, he said, "If it's a fair election, I'd be the first one to acknowledge it." He visited a nearby campaign office to thank staffers before a party at a nearby convention center.

After her DNC stop, Harris planned to attend a party at her alma mater, Howard University in Washington.

Federal, state and local officials have expressed confidence in the integrity of the nation's election systems. They nonetheless were braced to contend with what they say is an unprecedented level of foreign disinformation -- particularly from Russia and Iran -- as well as the possibility of physical violence or cyberattacks.

In Georgia's Fulton County, a Democratic stronghold that includes most of the city of Atlanta, 32 of the 177 polling places received bomb threats Tuesday, prompting brief evacuations at five locations, county Police Chief W. Wade Yates said. The threats were determined to be non-credible but voting hours were extended at those five locations.

Both sides have armies of lawyers in anticipation of legal challenges on and after Election Day. And law enforcement agencies nationwide are on high alert for potential violence.

Each candidate would take the country into new terrain

Harris, 60, would be the first woman, Black woman and person of South Asian descent to serve as president. She also would be the first sitting vice president to win the White House in 36 years.

Trump, 78, would be the oldest president ever elected. He would also be the first defeated president in 132 years to win another term in the White House, and the first person convicted of a felony to take over the Oval Office.

He survived one assassination attempt by millimeters at a July rally. Secret Service agents foiled a second attempt in September.

In Scranton, Pennsylvania, Liza Fortt arrived at her polling location in a wheelchair and not feeling well. But she said she ventured out anyway to vote for Harris.

"It means a lot to me and my grandkids, my granddaughters, my nieces. ... I was just waiting for this day to come," said Fortt, who is 74 and Black. She said she never thought she'd have such an opportunity, to cast a ballot for a Black woman in a presidential race.

"I'm proud, to see a woman, not only a woman, but a Black woman," Fortt said.

First-time voter Jasmine Perez, 26, cast her ballot at the Las Vegas Raiders' stadium in Nevada for Trump, citing his spiritual values.

"What really attracted me to Donald Trump is I'm a Christian," Perez said, noting of the former president, "I like that he openly promotes Christianity in America."

Harris, pointing to the warnings of Trump's former aides, has labeled him a "fascist" and blamed Trump for putting women's lives in danger by nominating three of the justices who overturned Roe v. Wade. In the closing hours of the campaign, she tried to strike a more positive tone and went all of Monday without saying her Republican opponent's name.

JD Jorgensen, an independent voter in Black Mountain, North Carolina, which was hit hard by Hurricane Helene, said voters should have made up their minds by now.

"I think that the candidates, both being in the public eye as long as they both have been, if you're on the fence, you hadn't really been paying attention," said Jorgensen, 35.

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Associated Press writers Jill Colvin in Palm Beach, Florida, Darlene Superville and Eric Tucker in Washington, Manuel Valdes in Las Vegas and Marc Levy in Allentown, Pennsylvania, contributed to this report.