California is holding a special primary election Tuesday to fill the vacancy in its 14th Congressional District left by former Rep. Eric Swalwell (D), who resigned from Congress in mid-April after allegations of sexual assault and misconduct, which he denies.

Under California’s primary system, all candidates run on the same ballot regardless of party. The top two vote-getters advance to the general election, which will be held on Aug. 18 for the 14th district.