Sen. Amy Klobuchar (D-Minn.) dropped her presidential bid Monday, an aide told HuffPost.

Klobuchar is set to endorse former Vice President Joe Biden at an event in Dallas on Monday night, The Associated Press reports .

Her decision comes after a poor showing in the South Carolina primary. She picked up just 3% of the vote, flailing in comparison to her fellow moderate Biden, who walked away with 48%.

Though the Minnesota senators campaign picked up steam in the leadup to the first primaries and caucuses, Klobuchars late-stage momentum wasnt enough to eclipse her most formidable opponents in the crowded Democratic field.

She joins former South Bend, Indiana, Mayor Pete Buttigieg and billionaire hedge fund manager Tom Steyer in dropping out just ahead of Super Tuesday. More than 1,500 delegates will be up for grabs as Democrats across 14 states and one overseas territory head to the polls.