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Joe Biden has won the race to become the next US president, defeating incumbent Donald Trump.

Major news networks project Biden has won the key battleground of Pennsylvania, pushing his electoral vote count to 273. 270 is the required electoral college threshold to win the Presidency.

“This election is about so much more than @JoeBiden or me. It’s about the soul of America and our willingness to fight for it,” Harris tweeted alongside a video.

“We have a lot of work ahead of us. Let’s get started,” she added.

The Trump campaign has indicated their candidate does not plan to concede.

The result makes Mr Trump the first one-term president since the 1990s.

Kamala Harris will be the United States’ next vice president.

She will be the first woman to hold the office. She will also be the country’s first Black and South Asian vice president.

The election has seen the highest turnout since 1900. Mr Biden has won more than 73 million votes so far, the most ever for a US presidential candidate. Mr Trump has drawn almost 70 million, the second-highest tally in history.

President Trump had falsely declared himself the winner of the election when vote counting was unfinished. He has since alleged irregularities in counting, but has not presented any evidence of election fraud.