An emboldened Joe Biden claimed a trove of new endorsements and campaign cash on Monday in an urgent scramble to rally the Democratic Party’s moderate wing behind him — and against progressive Bernie Sanders — as the Democrats’ shrinking presidential field raced toward Super Tuesday.

One of Biden’s leading moderate rivals, Pete Buttigieg, suspended his campaign Sunday just 24 hours after Biden scored a resounding victory in South Carolina, his first of the 2020 roller coaster nomination fight. Buttigieg and Biden spoke late Sunday night, but it was unclear if Buttigieg planned to endorse the former vice president.