O’Malley, a two-term governor with a litany of liberal accomplishments, sought the 2016 Democratic presidential nominee but dropped out after a poor showing in the Iowa caucuses. He is a former chairman of the Democratic Governors' Association.
So far, former governor Howard Dean has said he’s interested in the post, which he previously held. And Rep. Keith Ellison (D-Minn.) is expected to announce on Monday that he is in the running to replace interim chairwoman Donna Brazile.
Ellison has already picked up endorsements from Sen. Charles E. Schumer (D-N.Y.), expected to be the next minority leader in his chamber, and Sen. Bernie Sanders (Vt.), who was the runner-up in the Democratic primaries.
Though O'Malley tried to position himself as a progressive during the run-up to the primaries, he also had past ties to Bill and Hillary Clinton and the more centrist Democratic Leadership Council, a think tank that praised his data-driven method of governing while mayor of Baltimore. In the 2008 presidential race, O'Malley became one of the first governors to endorse Clinton for president.