Two Republican Senate incumbents—Bill Cassidy in Louisiana and John Cornyn in Texas—have already lost renomination to Trump-aligned challengers amid intra-party tensions over past impeachment votes, policy disagreements, and base mobilization in May primaries. These mark the first such elected GOP Senate primary defeats since 2012, with coordinated opposition and strong turnout among voters favoring stricter alignment with the administration shaping the outcomes. Most remaining Republican incumbents seeking renomination, including those in Alaska, Kansas, and Maine, have advanced with minimal opposition or comfortable margins, consistent with historical patterns where Senate primary losses remain rare absent major scandals or national coordination. Trader consensus around three total defeats reflects these confirmed results plus expectations of one additional upset in the few unresolved contests, while four draws modest support from uncertainty over any late developments.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated3 72.9%
4 15.6%
2 6.7%
0 <1%
$59,456 Vol.
$59,456 Vol.
0
<1%
1
<1%
2
7%
3
73%
4
19%
>4
<1%
3 72.9%
4 15.6%
2 6.7%
0 <1%
$59,456 Vol.
$59,456 Vol.
0
$4,221 Vol.
<1%
1
$3,323 Vol.
<1%
2
$31,338 Vol.
7%
3
$10,835 Vol.
73%
4
$5,645 Vol.
19%
>4
$4,094 Vol.
<1%
The 2026 midterm elections are scheduled to be held on November 3, 2026, with congressional primaries running from March through September.
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.Two Republican Senate incumbents—Bill Cassidy in Louisiana and John Cornyn in Texas—have already lost renomination to Trump-aligned challengers amid intra-party tensions over past impeachment votes, policy disagreements, and base mobilization in May primaries. These mark the first such elected GOP Senate primary defeats since 2012, with coordinated opposition and strong turnout among voters favoring stricter alignment with the administration shaping the outcomes. Most remaining Republican incumbents seeking renomination, including those in Alaska, Kansas, and Maine, have advanced with minimal opposition or comfortable margins, consistent with historical patterns where Senate primary losses remain rare absent major scandals or national coordination. Trader consensus around three total defeats reflects these confirmed results plus expectations of one additional upset in the few unresolved contests, while four draws modest support from uncertainty over any late developments.
The 2026 midterm elections are scheduled to be held on November 3, 2026, with congressional primaries running from March through September.
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.
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.
Market Opened: Jan 14, 2026, 2:51 PM ET
Volume
$59,456Market Opened
Jan 14, 2026, 2:51 PM ETResolver
0x2F5e3684c...The 2026 midterm elections are scheduled to be held on November 3, 2026, with congressional primaries running from March through September.
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.Two Republican Senate incumbents—Bill Cassidy in Louisiana and John Cornyn in Texas—have already lost renomination to Trump-aligned challengers amid intra-party tensions over past impeachment votes, policy disagreements, and base mobilization in May primaries. These mark the first such elected GOP Senate primary defeats since 2012, with coordinated opposition and strong turnout among voters favoring stricter alignment with the administration shaping the outcomes. Most remaining Republican incumbents seeking renomination, including those in Alaska, Kansas, and Maine, have advanced with minimal opposition or comfortable margins, consistent with historical patterns where Senate primary losses remain rare absent major scandals or national coordination. Trader consensus around three total defeats reflects these confirmed results plus expectations of one additional upset in the few unresolved contests, while four draws modest support from uncertainty over any late developments.
The 2026 midterm elections are scheduled to be held on November 3, 2026, with congressional primaries running from March through September.
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.
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.
Volume
$59,456Market Opened
Jan 14, 2026, 2:51 PM ETResolver
0x2F5e3684c...Two Republican Senate incumbents—Bill Cassidy in Louisiana and John Cornyn in Texas—have already lost renomination to Trump-aligned challengers amid intra-party tensions over past impeachment votes, policy disagreements, and base mobilization in May primaries. These mark the first such elected GOP Senate primary defeats since 2012, with coordinated opposition and strong turnout among voters favoring stricter alignment with the administration shaping the outcomes. Most remaining Republican incumbents seeking renomination, including those in Alaska, Kansas, and Maine, have advanced with minimal opposition or comfortable margins, consistent with historical patterns where Senate primary losses remain rare absent major scandals or national coordination. Trader consensus around three total defeats reflects these confirmed results plus expectations of one additional upset in the few unresolved contests, while four draws modest support from uncertainty over any late developments.
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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