Ballot measure · 3 November 2026

Iowa: Iowa vote to require a two-thirds vote to raise the income tax

35.0% Probability the measure passes TruthIndex™ · Kalshi onlyLean No

Polymarket: –
Kalshi: 35.0%
Spread: –
24h: −1.0
7 days: −1.0
Updated: Oct 16, 2026, 3:12 PM ET

Yes price, last 60 days

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Prices

Outcome	TruthIndex™		Kalshi	24h
Yes	35.0% Kalshi only		35.0%	−1.0

Kalshi

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Each venue's market

Kalshi18.7K contracts traded

Prices whether the measure passes.

Yes: Counted · bid 32.0% / ask 38.0% · $186 within 5 pts

If State Income-Tax Supermajority Amendment (S.J.R. 11) passes in Iowa, then the market resolves to Yes.

This market may resolve early once a consensus of designated media sources has declared a winner. See full rules for details.

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