S. 1377 — Theodore Roosevelt National Park Wild Horses Protection Act

6%becomes law moderate confidencepending: Senate reported

Theodore Roosevelt National Park Wild Horses Protection Act — reported and queued, quiet for 171 days; 18% to reach the floor, 6% to become law.

18%

reaches a floor vote

>99%

passes if voted (stage model)

35%

survives downstream

becomes law

The gap: on the floor this would pass — 49% by the member-vote simulation — but the floor is the hard part: 18% to ever get the vote. That gap, not the whip count, is the story.

If it reaches the floor

majority

60 (cloture)

Projected 65 yea of 100 voting; 90% interval 44–95 (quartiles 52–82). Intervals are backtest-verified to cover ~90%.

Filibusterable: the realistic Senate line is 60 votes — P(≥60) = 49% (simple-majority P = 92%).

By floor procedure

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

Procedure	Likelihood	Projected yea	Passes
conference	5%	69 [43–96]	91%
passage	95%	65 [44–94]	92%

Receipts

Sponsor: John Hoeven (R). Latest action (2025-12-17): Committee on Energy and Natural Resources. Ordered to be reported without amendment favorably.
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).