Republicans currently hold a 53-47 Senate majority ahead of the 2026 midterms, requiring Democrats to achieve a net gain of four seats for control. Nate Silver’s FLIPR model on the Silver Bulletin gives Democrats a 56.8 percent chance of winning the chamber as of late August, reflecting a Democratic generic ballot advantage near six points and President Trump’s approval rating around 38 percent. Recent polling shifts have moved races in Texas, Ohio, Alaska, Iowa, and Maine toward toss-up or lean-Democratic status, with Texas emerging as the most probable tipping-point contest. The model incorporates polling averages, fundamentals, and historical midterm patterns, though structural factors like the number of Republican-held seats at risk continue to shape the probabilities. Updated polling and campaign developments through the fall could alter these assessments ahead of the November election.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedNEW
Nov 3, 2026
August 31
38%
September 15
39%
September 30
50%
October 31
49%
$0.00 Vol.
August 31
$0 Vol.
38%
September 15
$0 Vol.
39%
September 30
$0 Vol.
50%
October 31
$0 Vol.
49%
This market will resolve to "Yes" if, at any point by the specified date at 11:59PM ET, the Silver Bulletin Flipr Forecast of the 2026 Senate election gives Republicans a greater than 50% chance to control the United States Senate. Otherwise, this market will resolve to "No". A 50.0% chance shall not be sufficient to resolve this market.
The resolution source will be Silver Bulletin's 2026 Flipr Forecast of Senate control, using the "Deluxe" version of the forecast, that can be found at https://www.natesilver.net/p/nate-silver-2026-midterm-election-polls-model.
Changes in the methodology by which Silver Bulletin calculates the forecast will have no bearing on the resolution of this market. If either Silver Bulletin or Flipr rebrand or otherwise change names or urls, this market will resolve based on the clearly-identified successor, should one exist. If Silver Bulletin's "Deluxe" Flipr model becomes permanently unavailable, the "Classic" model will be used.
Republicans currently hold a 53-47 Senate majority ahead of the 2026 midterms, requiring Democrats to achieve a net gain of four seats for control. Nate Silver’s FLIPR model on the Silver Bulletin gives Democrats a 56.8 percent chance of winning the chamber as of late August, reflecting a Democratic generic ballot advantage near six points and President Trump’s approval rating around 38 percent. Recent polling shifts have moved races in Texas, Ohio, Alaska, Iowa, and Maine toward toss-up or lean-Democratic status, with Texas emerging as the most probable tipping-point contest. The model incorporates polling averages, fundamentals, and historical midterm patterns, though structural factors like the number of Republican-held seats at risk continue to shape the probabilities. Updated polling and campaign developments through the fall could alter these assessments ahead of the November election.
This market will resolve to "Yes" if, at any point by the specified date at 11:59PM ET, the Silver Bulletin Flipr Forecast of the 2026 Senate election gives Republicans a greater than 50% chance to control the United States Senate. Otherwise, this market will resolve to "No". A 50.0% chance shall not be sufficient to resolve this market.
The resolution source will be Silver Bulletin's 2026 Flipr Forecast of Senate control, using the "Deluxe" version of the forecast, that can be found at https://www.natesilver.net/p/nate-silver-2026-midterm-election-polls-model.
Changes in the methodology by which Silver Bulletin calculates the forecast will have no bearing on the resolution of this market. If either Silver Bulletin or Flipr rebrand or otherwise change names or urls, this market will resolve based on the clearly-identified successor, should one exist. If Silver Bulletin's "Deluxe" Flipr model becomes permanently unavailable, the "Classic" model will be used.
The resolution source will be Silver Bulletin's 2026 Flipr Forecast of Senate control, using the "Deluxe" version of the forecast, that can be found at https://www.natesilver.net/p/nate-silver-2026-midterm-election-polls-model.
Changes in the methodology by which Silver Bulletin calculates the forecast will have no bearing on the resolution of this market. If either Silver Bulletin or Flipr rebrand or otherwise change names or urls, this market will resolve based on the clearly-identified successor, should one exist. If Silver Bulletin's "Deluxe" Flipr model becomes permanently unavailable, the "Classic" model will be used.
Market Opened: Aug 21, 2026, 4:26 PM ET
Volume
$0End Date
Nov 3, 2026Market Opened
Aug 21, 2026, 4:26 PM ETResolver
0x65070BE91...This market will resolve to "Yes" if, at any point by the specified date at 11:59PM ET, the Silver Bulletin Flipr Forecast of the 2026 Senate election gives Republicans a greater than 50% chance to control the United States Senate. Otherwise, this market will resolve to "No". A 50.0% chance shall not be sufficient to resolve this market.
The resolution source will be Silver Bulletin's 2026 Flipr Forecast of Senate control, using the "Deluxe" version of the forecast, that can be found at https://www.natesilver.net/p/nate-silver-2026-midterm-election-polls-model.
Changes in the methodology by which Silver Bulletin calculates the forecast will have no bearing on the resolution of this market. If either Silver Bulletin or Flipr rebrand or otherwise change names or urls, this market will resolve based on the clearly-identified successor, should one exist. If Silver Bulletin's "Deluxe" Flipr model becomes permanently unavailable, the "Classic" model will be used.
Republicans currently hold a 53-47 Senate majority ahead of the 2026 midterms, requiring Democrats to achieve a net gain of four seats for control. Nate Silver’s FLIPR model on the Silver Bulletin gives Democrats a 56.8 percent chance of winning the chamber as of late August, reflecting a Democratic generic ballot advantage near six points and President Trump’s approval rating around 38 percent. Recent polling shifts have moved races in Texas, Ohio, Alaska, Iowa, and Maine toward toss-up or lean-Democratic status, with Texas emerging as the most probable tipping-point contest. The model incorporates polling averages, fundamentals, and historical midterm patterns, though structural factors like the number of Republican-held seats at risk continue to shape the probabilities. Updated polling and campaign developments through the fall could alter these assessments ahead of the November election.
This market will resolve to "Yes" if, at any point by the specified date at 11:59PM ET, the Silver Bulletin Flipr Forecast of the 2026 Senate election gives Republicans a greater than 50% chance to control the United States Senate. Otherwise, this market will resolve to "No". A 50.0% chance shall not be sufficient to resolve this market.
The resolution source will be Silver Bulletin's 2026 Flipr Forecast of Senate control, using the "Deluxe" version of the forecast, that can be found at https://www.natesilver.net/p/nate-silver-2026-midterm-election-polls-model.
Changes in the methodology by which Silver Bulletin calculates the forecast will have no bearing on the resolution of this market. If either Silver Bulletin or Flipr rebrand or otherwise change names or urls, this market will resolve based on the clearly-identified successor, should one exist. If Silver Bulletin's "Deluxe" Flipr model becomes permanently unavailable, the "Classic" model will be used.
The resolution source will be Silver Bulletin's 2026 Flipr Forecast of Senate control, using the "Deluxe" version of the forecast, that can be found at https://www.natesilver.net/p/nate-silver-2026-midterm-election-polls-model.
Changes in the methodology by which Silver Bulletin calculates the forecast will have no bearing on the resolution of this market. If either Silver Bulletin or Flipr rebrand or otherwise change names or urls, this market will resolve based on the clearly-identified successor, should one exist. If Silver Bulletin's "Deluxe" Flipr model becomes permanently unavailable, the "Classic" model will be used.
Volume
$0End Date
Nov 3, 2026Market Opened
Aug 21, 2026, 4:26 PM ETResolver
0x65070BE91...Republicans currently hold a 53-47 Senate majority ahead of the 2026 midterms, requiring Democrats to achieve a net gain of four seats for control. Nate Silver’s FLIPR model on the Silver Bulletin gives Democrats a 56.8 percent chance of winning the chamber as of late August, reflecting a Democratic generic ballot advantage near six points and President Trump’s approval rating around 38 percent. Recent polling shifts have moved races in Texas, Ohio, Alaska, Iowa, and Maine toward toss-up or lean-Democratic status, with Texas emerging as the most probable tipping-point contest. The model incorporates polling averages, fundamentals, and historical midterm patterns, though structural factors like the number of Republican-held seats at risk continue to shape the probabilities. Updated polling and campaign developments through the fall could alter these assessments ahead of the November election.
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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