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AZ-05 Republican Primary Winner

Market icon

AZ-05 Republican Primary Winner

Mark Lamb 89%

Travis Grantham 6.6%

Jay Feely 5.0%

Polymarket
NEW

Mark Lamb 89%

Travis Grantham 6.6%

Jay Feely 5.0%

Polymarket
NEW

Mark Lamb

$1,775 Vol.

89%

Travis Grantham

$631 Vol.

7%

Jay Feely

$0 Vol.

5%

This market will resolve according to the candidate who wins the nomination for the Republican Party to contest the AZ-05 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Republican primary will take place on August 4, 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.Former Pinal County Sheriff Mark Lamb dominates trader consensus at 88% implied probability to win Arizona's 5th Congressional District Republican primary on July 21, driven by consistent late-2025 polling leads of 49-55% among likely GOP voters, President Trump's November endorsement, and backing from Reps. Paul Gosar, Eli Crane, Speaker Mike Johnson, and Majority Leader Steve Scalise. Recent developments bolstering his position include former state Rep. Travis Grantham's mid-March campaign suspension for Air National Guard active duty and ex-NFL kicker Jay Feely's withdrawal to run in AZ-01, consolidating support in this deep-red, open-seat race (R+10 PVI) vacated by Rep. Andy Biggs for governor. Absent late-breaking scandals or surges by challengers like Daniel Keenan, Lamb's name recognition and fundraising edge sustain his frontrunner status.

This market will resolve according to the candidate who wins the nomination for the Republican Party to contest the AZ-05 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Republican primary will take place on August 4, 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.
Volume
$2,407
End Date
Aug 4, 2026
Market Opened
Nov 25, 2025, 5:27 PM ET
This market will resolve according to the candidate who wins the nomination for the Republican Party to contest the AZ-05 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Republican primary will take place on August 4, 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.
This market will resolve according to the candidate who wins the nomination for the Republican Party to contest the AZ-05 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Republican primary will take place on August 4, 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.Former Pinal County Sheriff Mark Lamb dominates trader consensus at 88% implied probability to win Arizona's 5th Congressional District Republican primary on July 21, driven by consistent late-2025 polling leads of 49-55% among likely GOP voters, President Trump's November endorsement, and backing from Reps. Paul Gosar, Eli Crane, Speaker Mike Johnson, and Majority Leader Steve Scalise. Recent developments bolstering his position include former state Rep. Travis Grantham's mid-March campaign suspension for Air National Guard active duty and ex-NFL kicker Jay Feely's withdrawal to run in AZ-01, consolidating support in this deep-red, open-seat race (R+10 PVI) vacated by Rep. Andy Biggs for governor. Absent late-breaking scandals or surges by challengers like Daniel Keenan, Lamb's name recognition and fundraising edge sustain his frontrunner status.

This market will resolve according to the candidate who wins the nomination for the Republican Party to contest the AZ-05 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Republican primary will take place on August 4, 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.
Volume
$2,407
End Date
Aug 4, 2026
Market Opened
Nov 25, 2025, 5:27 PM ET
This market will resolve according to the candidate who wins the nomination for the Republican Party to contest the AZ-05 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Republican primary will take place on August 4, 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.

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Frequently Asked Questions

"AZ-05 Republican Primary Winner" is a prediction market on Polymarket with 3 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Mark Lamb" at 89%, followed by "Travis Grantham" at 7%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 89¢ implies that the market collectively assigns a 89% 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.

"AZ-05 Republican Primary Winner" is a newly created market on Polymarket, launched on Nov 25, 2025. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "AZ-05 Republican Primary Winner," browse the 3 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 "AZ-05 Republican Primary Winner" is "Mark Lamb" at 89%, meaning the market assigns a 89% chance to that outcome. The next closest outcome is "Travis Grantham" at 7%. 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 "AZ-05 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.