Votes at a glance: key bills passed by the Senate on March 4, 2026
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Summary
On March 4 the Senate passed a series of bills including measures on OII authority, CPDA stadium funding, homeowner resale transparency, student collective bargaining, AI provenance, housing production, and more. Listed below are the floor outcomes, key provisions and sponsors.
The Senate recorded final passage on multiple floor items on March 4. Key outcomes and vote tallies (as reported on the floor) follow.
Votes at a glance
- Engrossed Substitute House Bill 2508 (Office of Independent Investigations): Clarifies scope and authority. Passed (44 yea, 4 nay, 1 excused). Sponsor on floor: Senator Dhingra.
- Gross Substitute House Bill 1408 (Community Preservation and Development Authority funding): Dedicate 20% of state sales tax revenue generated at two large stadium facilities to the CPDA; requires JLARC review by December 2034; expires 01/01/2037. Passed (47 yea, 1 nay, 1 excused). Sponsor: Senator Saldana.
- Engrossed Substitute House Bill 1500 (Resale certificates for common interest communities): Adds transparency requirements for prospective buyers and clarifies remedies to reduce onerous litigation. Passed (39 yea, 9 nay, 1 excused). Sponsor: Senator Bateman.
- Substitute House Bill 1570 (Collective bargaining for certain employees enrolled in academic programs): Adds bargaining rights for specified employee groups; the Senate voted to pass after debate (29 yea, 19 nay, 1 excused). Sponsor floor remarks: Senator Shoemake and Senator Dozier on the amendment debates.
- Substitute House Bill 1390 (Repeal Community Protection Program): Repealed CPP with transition instructions to DSHS and DDA waiver services; passed after extensive floor debate (29 yea, 20 nay). Sponsor: Senator Wilson Claire.
- Second substitute House Bill 2416 (Waste-to-energy / Climate Commitment Act adjustments): Committee striking amendment adopted and bill advanced to final passage with amendments related to allocation schedules and ratepayer protections; passed as amended following committee and floor action.
- Substitute House Bill 2266 (Supportive/transitional/emergency housing): Encourages permanent supportive housing and emergency indoor shelters and adopted multiple amendments addressing staffing and objective development regulations; passed (29 yea, 20 nay). Sponsor: Senator Bateman.
- Engrossed Second Substitute House Bill 1170 (AI provenance/disclosure): Requires provenance metadata to identify content produced or altered by artificial intelligence; clarifying amendment adopted. Passed (46 yea, 3 nay). Sponsor and floor sponsor: Senator Shoemake.
- House Bill 2254 (Partnership Access Line administrative costs): Allows assessment to cover administrative costs for the pediatric psychiatric consultation line; passed (49 yea, 0 nay). Sponsor: Senator Robinson.
Notes and next steps: Several of the bills that passed direct agencies to adopt implementation plans, and others include study or reporting requirements (e.g., JLARC review in HB1408). For measures that require agency rulemaking or funding, implementation will be staged through agency processes and budget actions.