KY-04 Republican Primary Winner

Name: KY-04 Republican Primary Winner
Start: 2025-12-01T22:00:58.422Z
End: 2026-05-19T00:00:00.000Z

Politics·Primaries

KY-04 Republican Primary Winner

Thomas Massie 65%

Ed Gallrein 35.2%

Nicole Lee Ethington <1%

Robert Wells Jr. <1%

$103,849 Vol.

May 19, 2026

Thomas Massie

$76,207 Vol.

65%

Ed Gallrein

$27,641 Vol.

35%

Nicole Lee Ethington

$0 Vol.

<1%

Robert Wells Jr.

$0 Vol.

<1%

Thomas Massie 65%

Ed Gallrein 35.2%

Nicole Lee Ethington <1%

Robert Wells Jr. <1%

$103,849 Vol.

May 19, 2026

Thomas Massie

$76,207 Vol.

65%

Ed Gallrein

$27,641 Vol.

35%

Nicole Lee Ethington

$0 Vol.

<1%

Robert Wells Jr.

$0 Vol.

<1%

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.

Incumbent Rep. Thomas Massie's strong lead in the Kentucky 4th District GOP primary reflects his incumbency advantage, bolstered by President Trump's endorsement on May 17 and former challenger Eric Deters' withdrawal and backing earlier in May, consolidating conservative support ahead of the May 21 vote. Recent polls, including a WPA Intelligence survey showing Massie at 52% to Ed Gallrein's 25%, reinforce trader consensus at 64.5% implied probability for Massie versus 35.1% for Gallrein, the remaining viable challenger backed by some local donors. Minor candidates Nicole Ethington and Robert Wells Jr. trail far behind amid low visibility, with markets pricing in limited upset risk in this reliably Republican district.

Experimental AI-generated summary referencing Polymarket data · Updated Mar 18, 2026, 8:56 AM UTC

Will Ryan Dotson be the Republican Nominee for KY-06?

45%

Will Mark Lamb be the Republican nominee for AZ-05?

87%

Will the Republican Party win the KY-04 House seat?

90%

Beware of external links.

Frequently Asked Questions

"KY-04 Republican Primary Winner" is a prediction market on Polymarket with 4 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Thomas Massie" at 65%, followed by "Ed Gallrein" at 35%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 65¢ implies that the market collectively assigns a 65% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "KY-04 Republican Primary Winner" has generated $103.8K in total trading volume since the market launched on Dec 1, 2025. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "KY-04 Republican Primary Winner," browse the 4 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "KY-04 Republican Primary Winner" is "Thomas Massie" at 65%, meaning the market assigns a 65% chance to that outcome. The next closest outcome is "Ed Gallrein" at 35%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "KY-04 Republican Primary Winner" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.

Yes. You don't need to trade to stay informed. This page serves as a live tracker for "KY-04 Republican Primary Winner." The outcome probabilities update in real-time as new trades come in. You can bookmark this page and check the comments section to see what other traders are saying. You can also use the time-range filters on the chart to see how the odds have shifted over time. It's a free, real-time window into what the market expects to happen.

Polymarket odds are set by real traders putting real money behind their beliefs, which tends to surface accurate predictions. With $103.8K traded on “KY-04 Republican Primary Winner,” these prices aggregate the collective knowledge and conviction of thousands of participants — often outperforming polls, expert forecasts, and traditional surveys. Prediction markets like Polymarket have a strong track record of accuracy, especially as events approach their resolution date. For example, Polymarket has a one month accuracy score of 94%. For the latest stats on Polymarket’s prediction accuracy, visit the accuracy page on Polymarket.

To place your first trade on "KY-04 Republican Primary Winner," sign up for a free Polymarket account and fund it using crypto, a credit or debit card, or a bank transfer. Once your account is funded, return to this page, select the outcome you want to trade, enter your amount, and click "Trade." If you're new to prediction markets, click the "How it works" link at the top of any Polymarket page for a quick step-by-step walkthrough of how trading works.

On Polymarket, the price of each outcome represents the market's implied probability. A price of 65¢ for "Thomas Massie" in the "KY-04 Republican Primary Winner" market means traders collectively believe there is roughly a 65% chance that "Thomas Massie" will be the correct result. If you buy "Yes" shares at 65¢ and the outcome is correct, you receive $1.00 per share — a profit of 35¢ per share. If incorrect, those shares are worth $0.

The "KY-04 Republican Primary Winner" market is scheduled to resolve on or around May 19, 2026. This means trading will remain open and the odds will continue to shift as new information emerges until that date. The exact resolution timing depends on when the official result becomes available, as outlined in the "Rules" section on this page.

The "KY-04 Republican Primary Winner" market has an active community of 23 comments where traders share their analysis, debate outcomes, and discuss breaking developments. Scroll down to the comments section below to read what other participants think. You can also filter by "Top Holders" to see what the market's biggest traders are positioned on, or check the "Activity" tab for a real-time feed of trades.

Polymarket is the world's largest prediction market, where you can stay informed and profit from your knowledge of real-world events. Traders buy and sell shares on outcomes for topics ranging from politics and elections to crypto, finance, sports, tech, and culture, including markets like "KY-04 Republican Primary Winner." Prices reflect real-time, crowd-sourced probabilities backed by financial conviction, often providing faster and more accurate signals than polls, pundits, or traditional surveys.

KY-04 Republican Primary Winner

KY-04 Republican Primary Winner

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Comments (23)

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