Washington, April 9 -- : US Senator Bernie Sanders ended his presidential campaign on Wednesday, paving the way for Joe Biden's Democratic nomination for the 2020 election.

Sanders made the announcement in a call with his campaign staff, his campaign said, CNN reported.

Sanders announced he was dropping out of the race in an email to supporters, vowing that while "the campaign ends, the struggle continues."

Wisconsin primary on Tuesday might have contributed to the senator's decision to drop out.

President Donald Trump also commented on Sanders exit and blamed Senator Elizabeth Warren for diverting a hefty chunk of votes.

"Bernie Sanders is OUT! Thank you to Elizabeth Warren. If not for her, Bernie would have won almost every state on ...