Republican Senate primaries for the 2026 cycle have seen two incumbent defeats so far, with Bill Cassidy in Louisiana and John Cornyn in Texas both losing renomination to Trump-endorsed challengers amid intraparty pressure on senators viewed as insufficiently aligned with the administration's agenda. These outcomes, occurring in May, have anchored trader expectations around two total losses, reflected in the leading market price. Remaining contests feature limited additional high-profile challenges to incumbents like Lindsey Graham, who secured his nomination, while broader factors such as primary timing, candidate recruitment, and turnout patterns among base voters continue to shape the low probabilities assigned to zero, one, or four-plus defeats.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert2 51.9%
3 24.1%
1 <1%
0 <1%
$30,940 Vol.
$30,940 Vol.
0
<1%
1
1%
2
52%
3
27%
4
<1%
>4
<1%
2 51.9%
3 24.1%
1 <1%
0 <1%
$30,940 Vol.
$30,940 Vol.
0
<1%
1
1%
2
52%
3
27%
4
<1%
>4
<1%
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.
Markt eröffnet: 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...Republican Senate primaries for the 2026 cycle have seen two incumbent defeats so far, with Bill Cassidy in Louisiana and John Cornyn in Texas both losing renomination to Trump-endorsed challengers amid intraparty pressure on senators viewed as insufficiently aligned with the administration's agenda. These outcomes, occurring in May, have anchored trader expectations around two total losses, reflected in the leading market price. Remaining contests feature limited additional high-profile challenges to incumbents like Lindsey Graham, who secured his nomination, while broader factors such as primary timing, candidate recruitment, and turnout patterns among base voters continue to shape the low probabilities assigned to zero, one, or four-plus defeats.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert

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