S. 4631 — Expanding Whistleblower Protections for Contractors Act of 2026

45%becomes law high confidencepending: House passed_one_chamber

Expanding Whistleblower Protections for Contractors Act — Senate-passed, waiting on the House; projected 350 yea if called, enactment 45%.

✓

passed the Senate

→

45%

downstream: House + President

45%

becomes law

If it reaches the floor

majority

Projected 350 yea of 430 voting; 90% interval 218–418 (quartiles 309–408). Intervals are backtest-verified to cover ~90%.

By floor procedure

No vote is scheduled, so the headline marginalizes over how the House would take it up; the branches:

Procedure	Likelihood	Projected yea	Passes
passage	12%	289 [165–415]	89%
suspension	88%	358 [232–419]	>99%

Receipts

Sponsor: Gary C. Peters (D). Latest action (2026-05-21): Held at the desk.
Full record: Congress.gov.

Forecast run predict-20260606T193507Z · models member-vote-1.0.0-t117d118-20260606 + passage-1.0.0-t117d118-20260606 · conditional whip forecasts for the Senate run at moderate confidence (why).