The Republican nominee wins the Nebraska U.S. Senate race in 2026.
Nebraska holds a regular U.S. Senate election in November 2026. Resolves affirmatively if the Republican Party candidate secures the seat.
Across 6 frontier models answering independently, the panel treats this as close to settled: the median is 91%.
They do not agree: DeepSeek puts it at 96% and Claude at 52%, 44 points apart. A spread that wide usually means the question turns on something none of them can see yet.
Money disagrees. The market sits at 70%, so the models are 21 points more confident than people with cash on the outcome — one of the wider gaps in the archive.
Nothing is settled until 3 Nov 2026, when the outcome is checked against sources and every number above gets a permanent score.
- AI edge
- +21 pts
- Moved this week
- +2 pts
- Volume
- $235K
The models are clearly more confident than traders risking real money: 91% against 70%.
What each one said
-
DeepSeekDeepSeek
Nebraska is a deep-red state and no credible Democratic path exists in a midterm year with Trump's approval in the low 40s.
- Nebraska has not elected a Democratic senator since Ben Nelson's 2006 win; every Senate race since 2012 has gone Republican by double digits.
- Incumbent Republican Pete Ricketts is running for a full term after his 2023 appointment; he won the 2024 special by 25 points and faces no serious primary threat.
- The only scenario that flips this is a Ricketts health event or scandal forcing a replacement nominee before the October filing deadline, which is a low-probability tail.
96% -
GrokxAI
Ricketts (or GOP nominee) holds a deep-red Class 2 seat five weeks out.
- Nebraska last sent a Democrat to the Senate in 2006; Cook PVI R+13 and 2024 Ricketts/Fischer margins exceeded 20 points.
- GOP primary already produced a nominee; no viable independent or scandal has materialized by late September.
- Only a late, documented collapse in Ricketts’ favorability would move this below 85.
94% -
GPTOpenAI
Nebraska’s entrenched Republican lean makes an upset dependent on an unusually weak GOP nominee or national Democratic wave.
- Nebraska has elected Republicans to both Senate seats since 2012, and its 2024 presidential margin was strongly Republican.
- The GOP nominee needs only a plurality on November 3; Nebraska has no Senate runoff, limiting post-election paths to reversal.
- I would cut this sharply if credible October polling showed the Democrat within roughly three points or a major GOP nominee scandal emerged.
92% -
GeminiGoogle
Nebraska's deep baseline partisan lean and incumbent Pete Ricketts's massive financial advantages heavily insulate the Republican seat.
- Nebraska has not elected a non-Republican senator since Ben Nelson in 2006, giving the GOP an overwhelming structural floor.
- Dan Osborn proved an independent can make Nebraska competitive in 2024, but overcoming the state's double-digit red lean remains rare.
- Ricketts's ability to self-fund tens of millions prevents the kind of financial deficit that usually fuels red-state upsets.
89% -
QwenAlibaba
Nebraska is R+13 and the incumbent seat is held by a Republican; the only path to a flip is a catastrophic candidate collapse.
- Nebraska's partisan lean is roughly R+13 per Cook PVI; no Democrat has won a statewide race there since 2012 (Kerrey lost by 15 in 2012).
- The Republican nominee is likely either incumbent Deb Fischer or a well-funded primary winner; the seat has been held by Republicans since 1954.
- A Democratic upset would require a candidate-level scandal of historic proportions or a national wave exceeding 2006/2018 levels in a state that didn't even swing in…
87% -
ClaudeAnthropic
Depends whether independent Dan Osborn again splits the anti-GOP vote enough to beat the Republican nominee.
- Nebraska is deep-red, but in 2024 independent Dan Osborn nearly beat incumbent GOP Sen. Deb Fischer, showing real vulnerability.
- If Osborn or a similar strong independent runs again in 2026 against Pete Ricketts, the race could be genuinely competitive rather than a lock.
- Nebraska's statewide partisan lean still favors the GOP nominee absent a strong independent challenger consolidating opposition.
52%
6 of 6 models answered · 44 points between the highest and lowest. None was shown the market price.
Resolution criteria
This market will resolve according to the winner of the 2026 midterm Nebraska U.S. Senate election, inclusive of any run-offs. A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party. The candidates may be named in the contract for the convenience of traders. In the event that any named candidate is replaced as the nominee of their respective party prior to election day, the name in the contract will be updated and the market will resolve based on the replacement nominee of the party. The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Question sourced from Polymarket on 25 Sept 2026. Forecast by google/gemini-3.8-flash, anthropic/claude-sonnet-5, openai/gpt-5.6-terra, x-ai/grok-4.6, deepseek/deepseek-v4.1-flash, qwen/qwen3.8-max-0902 via OpenRouter.