Republicans currently hold a 53-47 Senate majority, requiring Democrats to secure a net gain of four seats in the November 3, 2026 midterms to flip control. Nate Silver’s FLIPR model on the Silver Bulletin, updated August 24–29, assigns Democrats a roughly 57% probability of winning the chamber versus 43% for Republicans, reflecting a Democratic-leaning generic ballot of about 6–7 points and polling averages that keep several Republican-held seats competitive. Key battlegrounds include Texas, where the race leans Democratic, along with toss-ups or near-toss-ups in Ohio, Maine, Michigan, Iowa, and Alaska; these races carry the highest probability of serving as the decisive “tipping point” in simulations. Broader dynamics include the typical midterm penalty for the president’s party and recent polling stability favoring Democrats, though outcomes remain sensitive to late shifts in turnout, candidate performance, and any remaining polling adjustments before Election Day.
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
38%
September 30
51%
October 31
51%
$0.00 Vol.
August 31
$0 Vol.
38%
September 15
$0 Vol.
38%
September 30
$0 Vol.
51%
October 31
$0 Vol.
51%
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, requiring Democrats to secure a net gain of four seats in the November 3, 2026 midterms to flip control. Nate Silver’s FLIPR model on the Silver Bulletin, updated August 24–29, assigns Democrats a roughly 57% probability of winning the chamber versus 43% for Republicans, reflecting a Democratic-leaning generic ballot of about 6–7 points and polling averages that keep several Republican-held seats competitive. Key battlegrounds include Texas, where the race leans Democratic, along with toss-ups or near-toss-ups in Ohio, Maine, Michigan, Iowa, and Alaska; these races carry the highest probability of serving as the decisive “tipping point” in simulations. Broader dynamics include the typical midterm penalty for the president’s party and recent polling stability favoring Democrats, though outcomes remain sensitive to late shifts in turnout, candidate performance, and any remaining polling adjustments before Election Day.
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, requiring Democrats to secure a net gain of four seats in the November 3, 2026 midterms to flip control. Nate Silver’s FLIPR model on the Silver Bulletin, updated August 24–29, assigns Democrats a roughly 57% probability of winning the chamber versus 43% for Republicans, reflecting a Democratic-leaning generic ballot of about 6–7 points and polling averages that keep several Republican-held seats competitive. Key battlegrounds include Texas, where the race leans Democratic, along with toss-ups or near-toss-ups in Ohio, Maine, Michigan, Iowa, and Alaska; these races carry the highest probability of serving as the decisive “tipping point” in simulations. Broader dynamics include the typical midterm penalty for the president’s party and recent polling stability favoring Democrats, though outcomes remain sensitive to late shifts in turnout, candidate performance, and any remaining polling adjustments before Election Day.
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, requiring Democrats to secure a net gain of four seats in the November 3, 2026 midterms to flip control. Nate Silver’s FLIPR model on the Silver Bulletin, updated August 24–29, assigns Democrats a roughly 57% probability of winning the chamber versus 43% for Republicans, reflecting a Democratic-leaning generic ballot of about 6–7 points and polling averages that keep several Republican-held seats competitive. Key battlegrounds include Texas, where the race leans Democratic, along with toss-ups or near-toss-ups in Ohio, Maine, Michigan, Iowa, and Alaska; these races carry the highest probability of serving as the decisive “tipping point” in simulations. Broader dynamics include the typical midterm penalty for the president’s party and recent polling stability favoring Democrats, though outcomes remain sensitive to late shifts in turnout, candidate performance, and any remaining polling adjustments before Election Day.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedRelated
Will total votes cast in the 2026 midterm election for Senator from Rhode Island be between 300,000 and 350,000?
47%
Will total votes cast in the 2026 midterm election for Senator from New Hampshire be between 650,000 and 700,000?
45%
Will Ted Cruz post 160-179 posts from September 1 to September 8, 2026?
33%
Beware of external links.
Beware of external links.
Frequently Asked Questions