| Outcome | Probability | Yes Bid | Yes Ask | 24h Change | Volume | |
|---|---|---|---|---|---|---|
| Before Jan 20, 2029 | 0% | 0¢ | 0¢ | — | $0 | Trade → |
This market asks whether the statutory number of Supreme Court justices will be changed during Donald Trump's presidency. It matters because any change would have lasting effects on the federal judiciary and how high‑court cases are decided.
The U.S. Constitution does not fix the number of Supreme Court justices; Congress sets the Court's size by statute. Congress has altered the number of justices several times in U.S. history, and proposals to change the Court often surface as part of broader debates over judicial reform and partisan balance.
Prediction market prices aggregate traders' information and expectations about the event; they move as new legislative, political, and public‑opinion information arrives. Use market movements as a real‑time signal of how participants interpret the likelihood of statutory change, not as a guarantee of outcome.
A change means a federal statute that alters the authorized number of Supreme Court justices and becomes law while the president is in office; measures that only propose or recommend changes do not count unless enacted.
Congress has the constitutional authority to set the number of justices by statute; the President can sign such a law or veto it, and Congress can override a veto by the constitutionally required margin.
No. The President cannot unilaterally change the Court's size, though a president can introduce or support legislation and must either sign or veto any bill Congress passes.
Yes. If a law enacted during the presidency temporarily or permanently alters the authorized number of justices, that statutory change counts as a change in the Court's size.
No. A bill must become law to change the Court's authorized size; a vetoed bill only changes the size if Congress subsequently overrides the veto and the override becomes law during the presidency.