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MANIFOLD
Will Republicans win the Senate in the 2026 elections?
500
Ṁ20kṀ210k
Dec 1
39%
chance

Resolves YES if after the 2026 United States elections members of the Republican party have won at least 51 seats in the Senate, or 50 seats with a Republican Vice President for tie-breaking purposes. Resolves NO otherwise.

If a politically independent/third-party senator is elected, they would count as a Republican for the purposes of this market if they are widely expected to caucus with the Republican party.

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Spending on the senate and house races. Republican advantages.

House, $1M

  • Field-heavy: ~2–4 turnout points in that district

  • Normal mix: ~0.3–1 point

  • TV pile-on in a hot race: ~0

Senate, $10M

  • Small state, field-heavy: ~1–5 points

  • Medium state, mixed: ~0.2–1 point

  • Large state, mixed: ~0–0.2 point

Buying 5 extra turnout points with mixed modern spend you are closer to $5–15M in a House district and $50–150M+ in a large Senate state. In top 6 senate races about +1-5 pts. Republicans with $1.4 billion should be able to put $20 million into the key 35 house races.

Kamala Harris had 4% polling advantage in 2024.

In the primaries there were 10-20 point polling errors.

@brianwang “TV ads paid for by campaigns (and associated federal committees) get TV time that cost roughly 1/3rd what it costs for Super PACs (like Paxton’s Super PAC, MAGA Inc. or America PAC).”

Just because they are spending more doesn’t mean they are getting more ads

Talarico has a lot of money himself. Paxton needs these outside super pacs

bought Ṁ150 YES

My brain says this is massively underpriced, given how stolen the elections are gonna be.

My gut doesn't allow me to bet all my mana.

Democratic Sen. John Fetterman appeared in a surprise video at the Republican Party's midterm convention on Wednesday. Does this signal that IF the senate went 49R-51D, that Fetterman would cross over ? I think it won't come to that. But there is a regular question about will crazy things happen.

bought Ṁ100 NO

Trump is a loser

bought Ṁ50 YES

This is the delulu thinking going on here. This is the rational trying to predicting what is the irrational people and the forces. Today I am feeling sorry for this country.

If this ended today, I'd honestly say it ends 50/50,. Republicans win with VP. It's such a close senate election, and could really go either way.

The AI wars have begun.

@Quroe mana-maxxing is instrumentally convergent!

🤌

Something feels mispriced. There's mana to be made for somebody to fix this.

opened a Ṁ2 YES at 59% order

@MichaelBlume If you want to take this up to 60%, which of these states do you think is/are mispriced? https://manifold.markets/election?r=UXVyb2U

bought Ṁ50 YES

@Quroe Both Maine and Michigan.

2026 Maine Senate Race

Graham Platner: 46% (-3)

Susan Collins (inc): 45% (+3)

2026 Maine Senate Race Among Independents

Susan Collins (inc): 43%

Graham Platner: 37% Quantus poll | 6/9-6/11

2026 Maine Senate Polling Averages Per Decision Desk

Graham Platner: 47.2% (-2.7)

Susan Collins: 45.1% (+3.4)

Texas, Alaska, Ohio

Republicans are toast

@AndrewG when do you decide to resolve? If a republican changes to caucus with dems on 30 November will that mean democrats win if it takes them from 50 to 51