WA Legislature - Session - 2025 - Timeline Washington State Legislature (WA Legislature) Washington State Senate (WA Senate) Washington State House of Representatives (WA House) Timeline Information Set Elements Milestone - Pre-Filing Begins - v1 [ Info ] Milestone - Session Begins - v1 [ Info ] Milestone - Sine Die - v1 [ Info ] Milestone - Executive Action Deadline - v1 [ Info ] Milestone - Default Effective Date - v1 [ Info ] Information Set Membership WA Legislature - Biennium - 2025-26 - Timeline