Two presidential candidates—Joe Sestak and Steve Bullock—have announced they are dropping out of the 2020 presidential race within the next two days.

Sestak, a retired three-star U.S. Navy admiral and former two-term congressman from Pennsylvania thanked his supporters in a tweet on Sunday night, Dec. 1, as he said he will be withdrawing from the race—claiming his failure to be largely due to lack of national support.

“I want to thank you for the honor of running for president of the United States of America,” Sestak tweeted.

“It has been an endeavor filled with immeasurable wisdom, passions, humor and insights to, and from, the people of America,” he said, thanking his supporters.

“I deeply appreciate the support so many of you offered—whether by volunteering, offering financial contributions, or coming to our campaign events,” Sestak said.

Sestak cited his daughter’s recent battle with brain cancer as an explanation to why he was late to the race, where his “announcement may be later than others for the honor of seeking the presidency.”

The former Pennsylvania congressman also noted that his campaign was unsuccessful in finding national support on Dec. 1, stating, “Without the privilege of national press, it is unfair to ask others to husband their resolve and to sacrifice resources any longer.”

Bullock, a two-term governor of Montana, dropped out of the 2020 race on Monday shortly after Sestak announced his withdrawal on Sunday.

Bullock, 53, withdrew his presidential bid after failing to meet qualification requirements for multiple debates and not being able to garner significant support in polling, CBS News reports.

“While there were many obstacles we could not have anticipated when entering this race, it has become clear that in this moment, I won’t be able to break through to the top tier of this still-crowded field of candidates,” Bullock said in a statement.

Although Bullock fell short of directly attacking other Democrats about abolishing private health insurance in the United States, he doubted South Bend mayor of Indiana Pete Buttigieg’s candidacy last month as he told reporters his thoughts in Iowa.

“He got 9,000 votes in a college town that last voted for a Republican for mayor in 1964,” Bullock said last month when asked about Buttigieg’s rise that put him ahead of former Vice President Joe Biden in a New York Times/Siena College poll in Iowa released on Nov. 1. “So from the perspective of being able to win back those places that we lost, I don’t think that he has it.”

The Montana governor will not be competing for Montana’s U.S. Senate seat up for grabs in 2020, Bullock’s Campaign Communications Director Galia Slayen said.