RCW 29B.10.110

"Commercial advertiser" means any person that sells the service of communicating messages or producing material for broadcast or distribution to the general public or segments of the general public whether through brochures, fliers, newspapers, magazines, television, radio, billboards, direct mail advertising, printing, paid internet or digital communications, or any other means of mass communication used for the purpose of appealing, directly or indirectly, for votes or for financial or other support in any election campaign.