Democratic presidential candidate former Vice President Joe Biden speaks to supporters, early Wednesday, Nov. 4, 2020, in Wilmington, Del. Biden defeated President Donald Trump to become the 46th president of the United States on Saturday, positioning himself to lead a nation gripped by historic pandemic and a confluence of economic and social turmoil. (AP Photo/Paul Sancya)
Democratic presidential candidate former Vice President Joe Biden speaks to supporters, early Wednesday, Nov. 4, 2020, in Wilmington, Del. Biden defeated President Donald Trump to become the 46th president of the United States on Saturday, positioning himself to lead a nation gripped by historic pandemic and a confluence of economic and social turmoil. (AP Photo/Paul Sancya)
WASHINGTON (AP) — Democrat Joe Biden defeated President Donald Trump to become the 46th president of the United States on Saturday, positioning himself to lead a nation gripped by the historic pandemic and a confluence of economic and social turmoil.
His victory came after more than three days of uncertainty as election officials sorted through a surge of mail-in votes that delayed the processing of some ballots. Biden crossed 270 Electoral College votes with a win in Pennsylvania.
Biden, 77, staked his candidacy less on any distinctive political ideology than on galvanizing a broad coalition of voters around the notion that Trump posed an existential threat to American democracy. The strategy proved effective, resulting in pivotal victories in Michigan and Wisconsin as well as Pennsylvania, onetime Democratic bastions that had flipped to Trump in 2016.
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Biden was on track to win the national popular vote by more than 4 million, a margin that could grow as ballots continue to be counted.
Trump seized on delays in processing the vote in some states to falsely allege voter fraud and argue that his rival was trying to seize power — an extraordinary charge by a sitting president trying to sow doubt about a bedrock democratic process.
As the vote count played out, Biden tried to ease tensions and project an image of presidential leadership, hitting notes of unity that were seemingly aimed at cooling the temperature of a heated, divided nation.
“We have to remember the purpose of our politics isn’t total unrelenting, unending warfare,” Biden said Friday night in Delaware. “No, the purpose of our politics, the work of our nation, isn’t to fan the flames of conflict, but to solve problems, to guarantee justice, to give everybody a fair shot.”
Kamala Harris also made history as the first Black woman to become vice president, an achievement that comes as the U.S. faces a reckoning on racial justice. The California senator, who is also the first person of South Asian descent elected to the vice presidency, will become the highest-ranking woman ever to serve in government, four years after Trump defeated Hillary Clinton.
Trump is the first incumbent president to lose reelection since Republican George H.W. Bush in 1992. It was unclear whether Trump would publicly concede.
Earlier Saturday Trump left the White House for his Virginia golf club dressed in golf shoes, a windbreaker and a white hat as the results gradually expanded Biden’s lead in Pennsylvania. Trump repeated his unsupported allegations of election fraud and illegal voting on Twitter, but they were quickly flagged as potentially misleading by the social media platform.
One of his erroneous tweets: “I WON THIS ELECTION, BY A LOT!”
The White House did not immediately respond to a request for comment.
Biden was spending Saturday morning with family and advisers at home in Wilmington, Delaware, his campaign said.
Americans showed deep interest in the presidential race. A record 103 million voted early this year, opting to avoid waiting in long lines at polling locations during a pandemic. With counting continuing in some states, Biden had already received more than 74 million votes, more than any presidential candidate before him.
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More than 236,000 Americans have died during the coronavirus pandemic, nearly 10 million have been infected and millions of jobs have been lost. The final days of the campaign played out against the backdrop of a surge in confirmed cases in nearly every state, including battlegrounds such as Wisconsin that swung to Biden.
The pandemic will soon be Biden’s to tame, and he campaigned pledging a big government response, akin to what Franklin D. Roosevelt oversaw with the New Deal during the Depression of the 1930s. But Senate Republicans fought back several Democratic challengers and looked to retain a fragile majority that could serve as a check on such Biden ambition.
The 2020 campaign was a referendum on Trump’s handling of the pandemic, which has shuttered schools across the nation, disrupted businesses and raised questions about the feasibility of family gatherings heading into the holidays.
The fast spread of the coronavirus transformed political rallies from standard campaign fare to gatherings that were potential public health emergencies. It also contributed to an unprecedented shift to voting early and by mail and prompted Biden to dramatically scale back his travel and events to comply with restrictions. Trump defied calls for caution and ultimately contracted the disease himself. He was saddled throughout the year by negative assessments from the public of his handling of the pandemic.
Biden also drew a sharp contrast to Trump through a summer of unrest over the police killings of Black Americans including Breonna Taylor in Kentucky and George Floyd in Minneapolis. Their deaths sparked the largest racial protest movement since the civil rights era. Biden responded by acknowledging the racism that pervades American life, while Trump emphasized his support of police and pivoted to a “law and order” message that resonated with his largely white base.
The president’s most ardent backers never wavered and may remain loyal to him and his supporters in Congress after Trump has departed the White House.
The third president to be impeached, though acquitted in the Senate, Trump will leave office having left an indelible imprint in a tenure defined by the shattering of White House norms and a day-to-day whirlwind of turnover, partisan divide and the ever-present threat via his Twitter account.
Biden, born in Scranton, Pennsylvania, and raised in Delaware, was one of the youngest candidates ever elected to the Senate. Before he took office, his wife and daughter were killed, and his two sons badly injured in a 1972 car crash.
Commuting every night on a train from Washington back to Wilmington, Biden fashioned an everyman political persona to go along with powerful Senate positions, including chairman of the Senate Judiciary and Foreign Relations Committees. Some aspects of his record drew critical scrutiny from fellow Democrats, including his support for the 1994 crime bill, his vote for the 2003 Iraq War and his management of the Clarence Thomas’ Supreme Court hearings.
Biden’s 1988 presidential campaign was done in by plagiarism allegations, and his next bid in 2008 ended quietly. But later that year, he was tapped to be Barack Obama’s running mate and he became an influential vice president, steering the administration’s outreach to both Capitol Hill and Iraq.
While his reputation was burnished by his time in office and his deep friendship with Obama, Biden stood aside for Clinton and opted not to run in 2016 after his adult son Beau died of brain cancer the year before.
Trump’s tenure pushed Biden to make one more run as he declared that “the very soul of the nation is at stake.”
Full Coverage: Election 2020
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Associated Press writer Jill Colvin contributed to this report.
Former Vice President Joe Biden campaigning in 2019.
Today, former  Joe Biden was projected by multiple media outlets to have surpassed 270  delegate total and therefore become the 46th President of the United States elect.

His running mate, Kamala Harris, would become the first female and first African- and Asian-American vice president.  

At around 11:25am  (1625 ), the Associated Press (AP) called the election for Biden, as did NBC News, when Biden was declared to have won Pennsylvania's 20 electoral college votes. Later in the day, the AP and NBC News also called Nevada for Biden, giving him an additional six electoral college votes, for a total by NBC's reckoning of 279 electoral votes to President Donald Trump's 214, or 290 electoral votes by AP's reckoning.
Electoral college results map when the election was called for Biden.
Biden said in a statement, "I am honored and humbled by the trust the American people have placed in me and in Vice President-elect Harris". He added, "With the campaign over, it's time to put the anger and the harsh rhetoric behind us and come together as a nation. It's time for America to unite. And to heal ... We are the United States of America. And there's nothing we can't do, if we do it together."

President Trump has yet to concede, saying earlier in the morning before the call for Biden, "I WON THIS ELECTION, BY A LOT!" on Twitter. Following the announcement of Biden's win, Trump issued a statement at  outside Washington, D.C. saying, "The simple fact is this election is far from over. Joe Biden has not been certified as the winner of any states, let alone any of the highly contested states headed for mandatory recounts, or states where our campaign has valid and legitimate legal challenges that could determine the ultimate victor". The lack of a concession from Trump has no legal standing.