Bernie Sanders has signalled he will work with Hillary Clinton to defeat Donald Trump in November's US presidential election, but stopped short of endorsing her campaign or dropping out of the Democratic nomination race.
In a live stream, the Vermont Senator said: "The major political task that we face in the next five months is to make certain that Donald Trump is defeated and defeated badly ... and I personally intend to begin my role in that process in a very short period of time."
He also thanked his supporters, and said he will continue to fight for his platform and ideals.
"I look forward, in the coming weeks, to continued discussions between the two campaigns to make certain that your voices are heard and that the Democratic Party passes the most progressive platform in its history and that Democrats actually fight for that agenda," said Mr Sanders in his Thursday speech.
While he refused to fully drop out of the race, he knows he is now fighting to ensure he maintains any bargaining power going into the Democratic convention.
Earlier today it was reported that Clinton is considering US Senator Elizabeth Warren for her running mate.
Warren, a leading progressive voice among Democrats, is among those Democratic presidential candidate Clinton is vetting for the vice presidential position, the Wall Street Journal reported.
Sanders is not, it added.
Sources told Reuters earlier this month that Warren, who represents Massachusetts, is considering the potential role.
Representatives for Clinton, Sanders and Warren did not immediately reply to requests for comment on the report.