Former Pinal County Sheriff Mark Lamb dominates trader consensus at 96.4% implied probability for Arizona's 5th Congressional District Republican primary on July 21, driven by President Trump's early endorsement, Club for Growth backing, and polling leads reaching 54% in late 2025 surveys of likely GOP primary voters. His name recognition from a prior U.S. Senate campaign and sheriff service positions him strongly in the safely Republican East Valley district, vacated by Rep. Andy Biggs' gubernatorial bid. Recent fundraising contrasts underscore Lamb's self-reliant strategy versus rivals like state Rep. Travis Grantham. Late-breaking scandal, rival endorsement surge, health event, or legal challenge could narrow the gap before early voting starts June 24.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedMark Lamb 96.3%
Travis Grantham 3.3%
Jay Feely <1%
$47,254 Vol.
$47,254 Vol.
Mark Lamb
96%
Travis Grantham
3%
Jay Feely
<1%
Mark Lamb 96.3%
Travis Grantham 3.3%
Jay Feely <1%
$47,254 Vol.
$47,254 Vol.
Mark Lamb
96%
Travis Grantham
3%
Jay Feely
<1%
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.
Market Opened: Nov 25, 2025, 5:27 PM ET
Resolver
0x2F5e3684c...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.
Resolver
0x2F5e3684c...Former Pinal County Sheriff Mark Lamb dominates trader consensus at 96.4% implied probability for Arizona's 5th Congressional District Republican primary on July 21, driven by President Trump's early endorsement, Club for Growth backing, and polling leads reaching 54% in late 2025 surveys of likely GOP primary voters. His name recognition from a prior U.S. Senate campaign and sheriff service positions him strongly in the safely Republican East Valley district, vacated by Rep. Andy Biggs' gubernatorial bid. Recent fundraising contrasts underscore Lamb's self-reliant strategy versus rivals like state Rep. Travis Grantham. Late-breaking scandal, rival endorsement surge, health event, or legal challenge could narrow the gap before early voting starts June 24.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated


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