Senator Bernie Sanders has suspended his campaign to become US president.
The development clears the way for former vice-president Joe Biden to become the Democrat party’s nominee.
Mr Sanders, 78, told his campaign staff about his decision on a conference call on Wednesday. He is expected to address his supporters online shortly.
A self-described Democratic socialist, Mr Sanders found early success making healthcare and working-class issues a key part of his election platform.
For a long time the front runner, he has slipped behind Mr Biden in the party’s primaries in recent weeks.
Mr Sanders had pursued the presidential nomination before, losing out in 2016 to Hillary Clinton.
In recent weeks, Mr Sanders had been hosting campaign events through online livestreams due to health concerns from the Covid-19 outbreak.
Among the most left-leaning candidates during this year’s election cycle, the Vermont Senator campaigned on policies including healthcare for all, free public college, raising taxes on the wealthy and increasing minimum wage.
While Mr Sanders saw support from younger voters, he failed to win key African-American voters across the southern states in the Democratic primary elections.
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US election 2020: Bernie Sanders suspends presidential campaign