U.S. Sen. Bernie Sanders of Vermont has been confirmed as a speaker at this Sunday’s King Unity Breakfast in Selma, which honors former presidential nominee Hillary Clinton and looks like it will be a gathering spot for 2020 presidential hopefuls.

Clinton will attend the breakfast. Sanders was her biggest challenger in 2016 before she clinched the Democratic nomination and then lost to President Donald Trump.

For Sanders, it will be one of first few campaign stops on his new presidential campaign, which he announced Feb. 19.

“U.S. Sen. Bernie Sanders is a unique figure in the American electoral landscape,” Selma event organizer and former state Sen. Hank Sanders said in a prepared statement. “He will join other presidential candidates, some of whom have already been announced. We look forward to each and every candidate sharing their visions with people from all over the nation and beyond.”

Two other presidential candidates, U.S. Senator Sherrod Brown and former U.S. Secretary of HUD Julian Castro, plan to be at the King Unity Breakfast on the campus of Wallace Community College on Sunday, March 3, at 7:30 a.m.

In addition, U.S. Sen. Cory Booker, another Democratic presidential candidate, is expected to speak at Brown Chapel AME Church in Selma that Sunday.

The breakfast is one of a number of events commemorating the “Bloody Sunday” civil rights march in 1965.

On Sunday afternoon, there will be a re-enactment of Bloody Sunday with a crossing of the Edmund Pettus Bridge. Sanders took part in the re-enactment march in 2015. Some fans of Sanders distributed a photo in 2016 claiming that he had taken part in the 1965 marches in Selma. Sanders has never claimed that, although he has said he was in the crowd at the March on Washington in 1963, and earlier took part in some civil rights activities in Chicago when he became a student at the University of Chicago in 1961. Sanders joined the campus chapter of CORE, the Congress of Racial Equality, and took part in protests against off-campus buildings owned by the University of Chicago that were refusing to rent to black students, in violation of the school’s policies, according to an article by Mother Jones magazine. CORE organized a 15-day sit-in at the administration building, which Sanders helped lead. The protest ended when George Beadle, the university’s president, agreed to form a commission to study the school’s housing policies.