Julia Letlow leads the Republican field for the Louisiana U.S. Senate nomination with an 89.5% implied probability, reflecting her first-place finish in the May 16 primary with roughly 45% of the vote. President Trump’s endorsement helped her consolidate support among primary voters opposed to incumbent Bill Cassidy, who received about 25% after his 2021 impeachment vote against Trump. State Treasurer John Fleming, the other runoff qualifier at 28%, trails in the June 27 contest as traders assess Letlow’s stronger polling among the party’s base and her established path through the state’s majority-vote runoff system. No other candidate exceeds 0.1% in current pricing.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedJulia Letlow 90%
John Fleming 9.6%
Bill Cassidy <1%
Julie Emerson <1%
$364,808 Vol.
$364,808 Vol.
Julia Letlow
90%
John Fleming
10%
Bill Cassidy
<1%
Julie Emerson
<1%
Blake Miguez
<1%
Kathy Seiden
<1%
Eric Skrmetta
<1%
Samuel “Sammy” Wyatt
<1%
Randall Arrington
<1%
Tracy Dendy
<1%
Chris Holder
<1%
Xan John
<1%
Julia Letlow 90%
John Fleming 9.6%
Bill Cassidy <1%
Julie Emerson <1%
$364,808 Vol.
$364,808 Vol.
Julia Letlow
90%
John Fleming
10%
Bill Cassidy
<1%
Julie Emerson
<1%
Blake Miguez
<1%
Kathy Seiden
<1%
Eric Skrmetta
<1%
Samuel “Sammy” Wyatt
<1%
Randall Arrington
<1%
Tracy Dendy
<1%
Chris Holder
<1%
Xan John
<1%
If no 2026 Louisiana Republican Senate Primary takes place, this market will resolve to “Other.”
The resolution source for this market will be the first announcement of the results from the Louisiana Republican Party; however an overwhelming consensus of credible reporting may suffice.
Market Opened: Dec 22, 2025, 1:09 PM ET
Resolver
0x2F5e3684c...If no 2026 Louisiana Republican Senate Primary takes place, this market will resolve to “Other.”
The resolution source for this market will be the first announcement of the results from the Louisiana Republican Party; however an overwhelming consensus of credible reporting may suffice.
Resolver
0x2F5e3684c...Julia Letlow leads the Republican field for the Louisiana U.S. Senate nomination with an 89.5% implied probability, reflecting her first-place finish in the May 16 primary with roughly 45% of the vote. President Trump’s endorsement helped her consolidate support among primary voters opposed to incumbent Bill Cassidy, who received about 25% after his 2021 impeachment vote against Trump. State Treasurer John Fleming, the other runoff qualifier at 28%, trails in the June 27 contest as traders assess Letlow’s stronger polling among the party’s base and her established path through the state’s majority-vote runoff system. No other candidate exceeds 0.1% in current pricing.
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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