Two Republican Senate incumbents, Bill Cassidy in Louisiana and John Cornyn in Texas, have already lost renomination to Trump-endorsed challengers in 2026 primaries, reflecting intra-party tensions between establishment figures and MAGA-aligned candidates. Trader consensus at 82.5% for exactly three total losses incorporates expectations of one additional upset amid ongoing or upcoming contests, with other Republican incumbents such as Lindsey Graham securing nominations despite competitive fields. Factors include Trump endorsements shifting primary dynamics, retirements like those of Thom Tillis and Joni Ernst reducing the pool of at-risk incumbents, and historical patterns of limited Senate primary defeats in midterm cycles. Low probabilities for zero, one, or more than four outcomes underscore limited remaining volatility before most nomination deadlines pass.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jour3 82.5%
2 8.0%
4 7.3%
>4 4.0%
$54,320 Vol.
$54,320 Vol.
0
<1%
1
<1%
2
8%
3
82%
4
7%
>4
4%
3 82.5%
2 8.0%
4 7.3%
>4 4.0%
$54,320 Vol.
$54,320 Vol.
0
<1%
1
<1%
2
8%
3
82%
4
7%
>4
4%
This market will resolve according to the number of Republican Senate incumbents who do not win their nominating election to move on to the general election as a result of the 2026 midterm primary elections.
An incumbent will be considered not to have won their election if they are not declared the winner of the election they sought, including if they withdraw, suspend, or otherwise leave the race at any point after officially registering as a candidate, regardless of the reason. Incumbents who do not officially register as candidates for reelection will not be considered.
This market will resolve based on the results of all Senate nominating elections, including party primaries, top-two or jungle primaries, and primaries for special elections, that are scheduled to occur between March 1 and September 30, 2026. If a required runoff for any such election or a subsequent qualifying round in a non-partisan primary system could change the market’s outcome, the market will remain open until that contest is conclusively called by this market’s resolution sources.
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time of their nominating election. A candidate without a ballot-listed affiliation to either the Democratic or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus prior to the conclusion of the relevant nominating election.
The resolution source for this market will be the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called all relevant nominating elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on official state certification of the nominating election results.
Marché ouvert : Jan 14, 2026, 2:51 PM ET
Resolver
0x2F5e3684c...This market will resolve according to the number of Republican Senate incumbents who do not win their nominating election to move on to the general election as a result of the 2026 midterm primary elections.
An incumbent will be considered not to have won their election if they are not declared the winner of the election they sought, including if they withdraw, suspend, or otherwise leave the race at any point after officially registering as a candidate, regardless of the reason. Incumbents who do not officially register as candidates for reelection will not be considered.
This market will resolve based on the results of all Senate nominating elections, including party primaries, top-two or jungle primaries, and primaries for special elections, that are scheduled to occur between March 1 and September 30, 2026. If a required runoff for any such election or a subsequent qualifying round in a non-partisan primary system could change the market’s outcome, the market will remain open until that contest is conclusively called by this market’s resolution sources.
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time of their nominating election. A candidate without a ballot-listed affiliation to either the Democratic or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus prior to the conclusion of the relevant nominating election.
The resolution source for this market will be the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called all relevant nominating elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on official state certification of the nominating election results.
Resolver
0x2F5e3684c...Two Republican Senate incumbents, Bill Cassidy in Louisiana and John Cornyn in Texas, have already lost renomination to Trump-endorsed challengers in 2026 primaries, reflecting intra-party tensions between establishment figures and MAGA-aligned candidates. Trader consensus at 82.5% for exactly three total losses incorporates expectations of one additional upset amid ongoing or upcoming contests, with other Republican incumbents such as Lindsey Graham securing nominations despite competitive fields. Factors include Trump endorsements shifting primary dynamics, retirements like those of Thom Tillis and Joni Ernst reducing the pool of at-risk incumbents, and historical patterns of limited Senate primary defeats in midterm cycles. Low probabilities for zero, one, or more than four outcomes underscore limited remaining volatility before most nomination deadlines pass.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jour

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