Monday 30 March 2026Afternoon Edition

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US Politics

Democrats Overtake Republicans in Senate Prediction Markets as Iran War Reshapes Political Landscape

Kalshi and Polymarket traders flip their bets sharply amid escalating Middle East tensions

Zotpaper2 min read
Prediction markets tracking US Senate control have swung sharply toward Democrats with traders on both Kalshi and Polymarket now pricing Democratic control as more likely than Republican — a dramatic reversal driven largely by the political fallout from the Iran war.

The shift reflects growing trader consensus that escalating conflict rising energy prices and economic disruption are creating a political environment that favours the opposition party. Both Kalshi and Polymarket show the same directional move suggesting the shift is driven by fundamental reassessment rather than speculative noise. The flip comes as opinion polls show declining public support for the Iran military campaign and growing concerns about its economic impact particularly fuel prices and inflation.

Analysis

Why This Matters

Prediction markets move faster than polls and often capture shifts in political sentiment early. A sustained move toward Democrats in Senate betting suggests professional observers see real vulnerability for the Republican majority.

What to Watch

Whether the shift is sustained or reverses if the Iran situation de-escalates. Also watch for Congressional Republicans breaking with the administration on the war.

Sources