Democrats currently hold a 22-18 majority in the Virginia State Senate, which holds elections every four years rather than every two.
The chamber is already poised to welcome at least 11 new members next year: ten incumbents are retiring, and two incumbents are running in the same district, leaving 11 districts open, over one-fourth of the chamber.
Before control of the chamber can be decided, candidates must proceed through primaries on June 20 or, in some cases, other nominating contests like conventions.
