The Working Families Party on Monday endorsed Vermont Sen. Bernie Sanders's bid for the Democratic presidential nomination days after Sen. Elizabeth Warren dropped out of the race. 

The WFP last year had endorsed Warren, a Massachusetts Democrat, over Sadners. Warren ended her campaign on Thursday. 

“Bernie Sanders will fight for a Green New Deal, universal health care and a living wage for every worker. Organized capital won’t rest and neither will we,” said Maurice Mitchell, the Working Families Party's national director.

“We said from the very beginning that there were two progressive champions in this race, and that our North Star was to elect one of them as president. Now, the Working Families Party will marshall its grassroots supporters and staff to help Senator Sanders win the nomination and defeat Donald Trump.”

The WFP had endorsed Sanders over Hillary Clinton in 2016. Warren is yet to endorse either Sanders or former Vice President Joe Biden.