Scenario analysis
As of 14 May 2026
Status quo
Republicans retain narrow control of both chambers of Congress

UBS probability: 15%

PredictIt forecast: 28%

Polymarket forecast: 22%
Divided Congress
Republicans retain control of the Senate but lose the House

UBS probability: 50%

PredictIt forecast: 33%

Polymarket forecast: 34%
Democratic sweep
Democrats assume control of both the Senate and the House

UBS probability: 35%

PredictIt forecast: 39%

Polymarket forecast: 44%
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