RCW 29B.40.110

A candidate may not knowingly establish, use, direct, or control more than one political committee for the purpose of supporting that candidate during a particular election campaign. This does not prohibit: (1) In addition to a candidate's having his or her own political committee, the candidate's participation in a political committee established to support a slate of candidates that includes the candidate; or (2) joint fund-raising efforts by candidates when a separate political committee is established for that purpose and all contributions are disbursed to and accounted for on a pro rata basis by the benefiting candidates.