**Trader consensus on the market for Republican Senate incumbent primary defeats centers on three losses, reflecting two confirmed renomination defeats and expectations for one additional upset amid a cycle with elevated primary challenges.** Bill Cassidy in Louisiana and John Cornyn in Texas have already lost their primaries to challengers backed by party figures, including Trump endorsements in competitive contests. Other Republican incumbents seeking renomination have largely prevailed or face limited opposition, though a handful of remaining or recently concluded races keep a third defeat plausible before the primary season fully concludes. Retirements such as Joni Ernst’s in Iowa do not factor into this count, as the market tracks only those who run and fall short. Historical base rates for incumbent primary losses remain low, yet this cycle’s dynamics—driven by intra-party competition and endorsements—support the current pricing around three total defeats.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · Aggiornato3 82.1%
4 8.1%
2 7.6%
>4 3.4%
$54,320 Vol.
$54,320 Vol.
0
<1%
1
<1%
2
8%
3
82%
4
8%
>4
3%
3 82.1%
4 8.1%
2 7.6%
>4 3.4%
$54,320 Vol.
$54,320 Vol.
0
<1%
1
<1%
2
8%
3
82%
4
8%
>4
3%
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.
Mercato aperto: 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...**Trader consensus on the market for Republican Senate incumbent primary defeats centers on three losses, reflecting two confirmed renomination defeats and expectations for one additional upset amid a cycle with elevated primary challenges.** Bill Cassidy in Louisiana and John Cornyn in Texas have already lost their primaries to challengers backed by party figures, including Trump endorsements in competitive contests. Other Republican incumbents seeking renomination have largely prevailed or face limited opposition, though a handful of remaining or recently concluded races keep a third defeat plausible before the primary season fully concludes. Retirements such as Joni Ernst’s in Iowa do not factor into this count, as the market tracks only those who run and fall short. Historical base rates for incumbent primary losses remain low, yet this cycle’s dynamics—driven by intra-party competition and endorsements—support the current pricing around three total defeats.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · Aggiornato


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