Former Washington, D.C., councilman and current mayoral candidate Kenyan McDuffie slammed his mayoral primary opponent, Councilwoman Janeese Lewis George, on Thursday, saying her campaign is built on “empty promises.”

McDuffie, a centrist ally of Mayor Muriel Bowser, spoke about his plans to make the district what he called the “most affordable city” in the United States and set his more centrist policies apart from Lewis George’s in an appearance on the Dream City Podcast on Thursday.