Ex-US vice-president, Joe Biden, has received endorsements from three former Democratic rivals ahead of one of the most important days in the 2020 presidential race.
Amy Klobuchar, Pete Buttigieg and Beto O’Rourke all campaigned with the septuagenarian Delaware senator in Dallas, Texas on Monday.
Ms. Klobuchar, a senator from Minnesota, told a campaign rally that the party faithful needed to unite behind the former vice-president, if they wanted to prevent another four “divisive” years of a Trump presidency.
Mr. Buttigieg, a former mayor from Indiana who dropped out of the race on Sunday, said at another event with Mr. Biden: “I’m looking for a leader, I’m looking for a president, who will draw out what’s best in each of us.”
On Super Tuesday, voters in fourteen states will pick their preferred Democratic candidate for the November 3 election.
However, the Democratic frontrunner remains the left-wing senator from Vermont, Bernie Sanders.
Centrists in the party have been calling on their leaders to urgently unite to try and stop Mr. Sanders, a self-professed social Democrat, from becoming the party’s nominee to face the Republican, Mr. Trump.
Meanwhile, Mr. Sanders has himself been steadily picking up endorsements from left-leaning Democrats, activist groups and high-profile celebrities.
The other candidates still in the Democratic race are billionaire businesswoman and senator, Elizabeth Warren, ex-New York mayor and former Republican Michael Bloomberg, and Tulsi Gabbard. With the exception of Ms. Gabbard, a Hawaii congresswoman, all of the Democratic hopefuls are in their seventies.