S. 428 — SAFE Orbit Act

8%becomes law moderate confidencepending: Senate on_calendar

SAFE Orbit Act — on the calendar, quiet for 250 days; 23% to reach the floor, 8% to become law.

23%

reaches a floor vote

>99%

passes if voted (stage model)

37%

survives downstream

becomes law

The gap: on the floor this would pass — 55% by the member-vote simulation — but the floor is the hard part: 23% to ever get the vote. That gap, not the whip count, is the story.

If it reaches the floor

majority

60 (cloture)

Projected 69 yea of 100 voting; 90% interval 49–96 (quartiles 54–87). Intervals are backtest-verified to cover ~90%.

Filibusterable: the realistic Senate line is 60 votes — P(≥60) = 55% (simple-majority P = 96%).

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%	72 [50–97]	96%
passage	95%	69 [49–95]	96%

Receipts

Sponsor: John Cornyn (R). Latest action (2025-09-29): Placed on Senate Legislative Calendar under General Orders. Calendar No. 170.
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).