President Donald Trump continues to shape Republican primaries for the 2026 midterms by selectively endorsing challengers against incumbents viewed as insufficiently aligned with his priorities. In recent weeks, he backed Julia Letlow in the Louisiana Senate primary against Bill Cassidy and Andy Barr in the Kentucky Senate contest, while testing his sway in Indiana state legislative races where some Trump-backed candidates prevailed. Attention now centers on the May 26 Texas Senate runoff between Attorney General Ken Paxton and incumbent John Cornyn, where Trump has signaled an imminent decision but has not yet announced one despite pressure from early voting starting May 18. These moves reflect ongoing intra-party dynamics and the market’s focus on the timing and targets of future endorsements.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$141,108 Vol.

Susan Collins - ME-Sen
48%

Ken Paxton - TX-Sen
38%

John Cornyn - TX-Sen
30%
$141,108 Vol.

Susan Collins - ME-Sen
48%

Ken Paxton - TX-Sen
38%

John Cornyn - TX-Sen
30%
If Donald Trump does not announce an endorsement by the day before the scheduled election at 11:59 PM ET, this market will resolve to "No".
The resolution source for this market will be official information from Donald Trump or one of his representatives, or a consensus of credible reporting of Donald Trump's endorsement.
Market Opened: Sep 12, 2025, 4:29 PM ET
Resolver
0x65070BE91...If Donald Trump does not announce an endorsement by the day before the scheduled election at 11:59 PM ET, this market will resolve to "No".
The resolution source for this market will be official information from Donald Trump or one of his representatives, or a consensus of credible reporting of Donald Trump's endorsement.
Resolver
0x65070BE91...President Donald Trump continues to shape Republican primaries for the 2026 midterms by selectively endorsing challengers against incumbents viewed as insufficiently aligned with his priorities. In recent weeks, he backed Julia Letlow in the Louisiana Senate primary against Bill Cassidy and Andy Barr in the Kentucky Senate contest, while testing his sway in Indiana state legislative races where some Trump-backed candidates prevailed. Attention now centers on the May 26 Texas Senate runoff between Attorney General Ken Paxton and incumbent John Cornyn, where Trump has signaled an imminent decision but has not yet announced one despite pressure from early voting starting May 18. These moves reflect ongoing intra-party dynamics and the market’s focus on the timing and targets of future endorsements.
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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