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Live prediction market odds for Who will be the Republican nominee for KY-04?. Compare prices across Kalshi and Polymarket.

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Kalshi / Polymarket

Who will be the Republican nominee for KY-04?

2026-05-01

About This Market

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Prediction markets on Polymarket and Kalshi are tracking the Republican nomination for KY-04 ahead of the 2026 election. The outcome will influence the party's strategy and competitiveness in the general election, making it a focal point for political analysts and voters alike.

Thomas Massie leads the “Who will be the Republican nominee for KY-04” event at 61.0% implied probability. Other contenders include Ed Gallrein (39.4%), and Nicole Lee Ethington (25.0%). A 50.0% cross-platform spread signals an active arbitrage window.

Price History

Multi-Platform Probabilities
Loading 30D data…

Live Markets

2 platforms
TM
Thomas MassieARB
61% Avg
Kalshi56¢
Polymarket67¢
PlatformImplied %Yes — Bid / AskNo — Bid / Ask
KalshiKalshi
55.5%55¢56¢44¢45¢
PolymarketPolymarket
66.5%66¢67¢33¢34¢
EG
Ed GallreinARB
40% Avg
Kalshi45¢
Polymarket35¢
PlatformImplied %Yes — Bid / AskNo — Bid / Ask
KalshiKalshi
44.5%44¢45¢55¢56¢
PolymarketPolymarket
34.5%34¢35¢65¢66¢
NL
Nicole Lee EthingtonARB
25% Avg
Kalshi0¢
Polymarket50¢
PlatformImplied %Yes — Bid / AskNo — Bid / Ask
KalshiKalshi
0.0%0¢0¢100¢100¢
PolymarketPolymarket
50.0%50¢50¢50¢50¢

Candidate Spotlight

About Thomas Massie

Thomas Massie is the current U.S. Representative for Kentucky's 4th Congressional District. He has served in Congress since 2012, known for his fiscal conservatism and strong support of gun rights. He is relevant to this prediction market as the incumbent Republican nominee for KY-04.

About Ed Gallrein

Ed Gallrein is a Republican candidate for Kentucky's 4th Congressional District. He is a retired Navy SEAL officer and a fifth-generation farmer. He is challenging incumbent Representative Thomas Massie in the upcoming primary election.

Frequently Asked Questions

What factors influence the odds for the Republican nominee in KY-04?

Factors include candidate polling data, fundraising capabilities, and endorsements from key party figures. Additionally, local issues and voter sentiment in Kentucky will play a crucial role.

When is the Republican primary for KY-04 scheduled?

The Republican primary for KY-04 is scheduled for May 1, 2026. This date is significant as it determines the party's candidate for the general election.

How do prediction markets reflect voter sentiment in KY-04?

Prediction markets aggregate the opinions of participants who wager on outcomes, providing insights into perceived candidate viability. As new information emerges, such as debates or campaign events, the odds can shift rapidly.

What is "Who will be the Republican nominee for KY-04?" and why does it matter?

Who will be the Republican nominee for KY-04 is a prediction market event currently tracked across 2 platforms (Kalshi, Polymarket). Thomas Massie leads at 61% implied probability, making it the market favorite. Other contenders include Ed Gallrein at 39%, Nicole Lee Ethington at 25%.

What is moving the odds on "Who will be the Republican nominee for KY-04?"?

Thomas Massie currently leads at 61% implied probability. Behind Thomas Massie, Ed Gallrein at 39% and Nicole Lee Ethington at 25% are the next closest contenders. The 50.0% cross-platform spread suggested platforms were pricing new information differently, creating potential trading opportunities.

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Resolution Oracles

KalshiKalshi
Democratic PartyRepublican Party
PolymarketPolymarket
UMA Optimistic Oraclernc.orgConsensus of Sources
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Market Rulebook: Who will be the Republican nominee for KY-04?

Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket.

KalshiKalshi
Primary Rule

If Nicole Lee Ethington wins the nomination for the Republican Party to contest the 2026 KY-04 House seat, then the market resolves to Yes.

Resolution Oracles
Democratic PartyRepublican Party
PolymarketPolymarket
Primary Rule

This market will resolve according to the candidate who wins the nomination for the Republican Party to contest the KY-04 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Republican primary will take place on May 19, 2026. If no nominee is announced by November 3, 2026, 11:59PM ET, this market will resolve to "Other". The resolution source for this market will be a consensus of official Republican sources, including https://www.rnc.org/. Any replacement of the nominee before election day will not change the resolution of the market.

Resolution Oracles
UMA Optimistic Oraclernc.orgConsensus of Sources
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50.0%
Platforms2
Candidates3
Leader

Thomas Massie

61.0% avg