Senator Bernie Sanders has dropped out of the Democrat nomination race.

This leaves former vice-president Joe Biden as the likely candidate to run against Donald Trump.

Sanders threw in the towel after disappointing primary results.

The veteran campaigner, 78, told supporters via livestream: "I want to thank the hundreds of thousands of volunteers who knocked on doors, millions of them, in the freezing winters of Iowa and New Hampshire, and in the heat, and in South Carolina, and in states throughout the country.

"I want to thank the two million Americans who have contributed financially to our campaign, and showed the world that we can take on a corrupt campaign and finance system, and run a major presidential campaign without being dependent on the wealthy and the powerful.

"Thank you for your 10 million contributions, averaging $18.50 (£14.93) a donation."

He had previously tried to win the Democrat nomination but lost out to Hilary Clinton in 2016.