Democratic presidential candidate and Minnesota Sen. Amy Klobuchar announced on Monday that she will suspend her campaign and endorse former Vice President Joe Biden. Her campaign aides confirmed that she will head to Dallas to join Biden at a rally.

Klobuchar’s announcement comes after her poor performance in the South Carolina primary and before Super Tuesday, when her home state will vote for the nominee.

On the campaign trail, Klobuchar portrayed herself as a moderate compared to her more progressive rivals, such as Vermont Sen. Bernie Sanders and Massachusetts Sen. Elizabeth Warren. She has also touted extensive political experience, having been in the Senate for 13 years.

The peak of her campaign was when she had managed an unexpected third-place showing in the New Hampshire primary, due to her strong campaign’s ground game in the state. Yet, her lack of support from minority voters proved to be a major issue for her candidacy in more diverse states such as Nevada and South Carolina.

She has frequently criticized her progressive rival Sanders for the cost of his proposed social programs and made her endorsement of Biden because she feels he is more electable against President Trump in the general election.

Klobuchar’s announcement comes after Indiana Mayor Pete Buttigieg dropped out of the race late Sunday. Like Klobuchar, Buttigieg was a moderate who also struggled to win over minority voters.

Klobuchar’s departure leaves Sanders, Biden, Warren and billionaire Michael Bloomberg as major contenders in the race. Hawaii Rep. Tulsi Gabbard is also still running but has not managed to garner significant support in any nominating contests so far.