SELMA, Ala. (AP) — Amy Klobuchar and Pete Buttigieg are uniting behind Joe Biden's presidential bid as the Democratic Party's moderate wing scrambled to boost the former vice president just hours before voting begins in high-stakes Super Tuesday states.

Klobuchar formally suspended her campaign and endorsed Biden on Monday, a day after Buttigieg announced his exit.

Buttigieg planned to announce his support for Biden later Monday at a rally in Dallas that Klobuchar also planned to attend.

That's according to two people familiar with the decision who were not authorized to speak publicly and spoke to The Associated Press on condition of anonymity.

Fourteen states, one U.S. territory and Democrats abroad cast ballots Tuesday.

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