(Photo : Alex Wong/Getty Images) Democratic U.S. presidential nominee Joe Biden gestures during a campaign stop outside Johnstown Train Station September 30, 2020 in Johnstown, Pennsylvania.

Joe Biden has won the U.S. presidential election after securing votes from the battleground state of Pennsylvania.

The win is based on projections from various news outlets where Biden was shown to have enough Electoral College votes to meet the 270 needed for the White House.

Biden's victory came after a surge of mail-in votes that were delayed processing, said Associated Press.

With Biden's victory, President Donald Trump will then be a one-term president only after four years in the White House.

He is the first president since 1992 to fail in winning a second term, according to Politico.

Trump Refuses to Concede

Despite Biden's claim to victory, Trump is refusing to concede defeat.

Yahoo News Australia reported that Trump isn't going down without a fight and did not want to accept the projections.

Read also: Trump Attacks Absentee Ballots Cast by Military as Count Continues

"I won this election, by a lot," he said in a tweet.

Trump has already filed a raft of lawsuits challenging the results, but election officials from different states rejected his suits.

They said there was no evidence of significant fraud.

Legal experts also believe Trump's efforts were more likely politically driven instead of legal and were unlikely to succeed.

Read also: Judges in Michigan and Georgia Reject Trump Lawsuits, Undercutting GOP Campaign's Legal Action

Throughout his candidacy, Biden rallied his voters around the notion that Trump posed a threat to American democracy.

The strategy proved itself effective in the end.

After three bids for the White House, Biden will become the oldest person elected president as he turns 78 later this month, reported New York Times.

Biden to Address Americans

An address is expected from Biden later in the day but in a statement written Saturday, he said he was "honored and humbled" that the people trusted him, said CNN.

He noted the record number of voting Americans for this year's election, "Proving once again, that democracy beats deep in the heart of America."

As the campaign closed, he asked supporters to put aside anger and to "come together as a nation."

"We are the United States of America. And there's nothing we can't do, if we do it together," he said.