Democrats are the clear favorite to take the House in November, and Kalshi's traders and our price-blind AI panel agree on that. They part ways on the Senate. The market makes Democrats a 62-cent favorite there. The panel, working from the actual list of seats in play, puts it near one in five. That single gap decides which of the four possible Novembers is the favorite. The market's top pick is a full Democratic sweep at 61 cents. The panel's favorite is a split Congress, Democratic House and Republican Senate, which it prices at 55 percent against a market price of 30 cents.
The seat-by-seat board, the Senate math behind the call, and the individual races the panel has scored are below. Prices are Kalshi's as of October 13, 2026. The panel's estimates were generated August 8 and have not been re-run since.
The Market
| Venue | Kalshi (where prediction markets are legal) |
| The Event | "2026 Midterms: Congress Balance of Power" (ticker KXBALANCEPOWERCOMBO-27FEB), four mutually exclusive outcomes, one contract each |
| Settles | On which party controls each chamber as of February 1, 2027, decided by the November 3, 2026 elections |
| Prices As Of | October 13, 2026: D-House/D-Senate 61¢ · D-House/R-Senate 30¢ · R-House/R-Senate 10¢ · R-House/D-Senate 0.8¢ |
This is a neutral, data-driven analysis. It presents both parties' paths identically, advocates for neither, and every electoral fact in it comes from the sources named on the page.
The Board
Six models returned verdicts on this run; the GPT and Gemini seats were unavailable. None of them saw Kalshi's prices. Each priced all four outcomes in one pass, so no model could favor a Democratic House in one row and contradict itself in another.
| Outcome | Market | Fable | Opus | Sonnet | GLM | Kimi | DeepSeek | Blend | Edge |
|---|---|---|---|---|---|---|---|---|---|
| D House / R Senate (Split) | 30¢ | 58 | 55 | 61 | 44 | 58 | 55 | 55.2% | +25.2 |
| D House / D Senate (Sweep) | 61¢ | 20 | 21 | 14 | 8 | 22 | 20 | 17.5% | −43.5 |
| R House / R Senate (R Hold) | 10¢ | 20 | 21 | 21 | 41 | 18 | 20 | 23.5% | +13.5 |
| R House / D Senate (Reverse) | 0.8¢ | 2 | 3 | 4 | 7 | 2 | 5 | 3.8% | +3.0 |
Read by chamber, Kalshi's separate House and Senate markets have Democrats taking the House at 90 cents, and the panel has it at 72.7 percent. On the Senate the market sits at 62 cents and the panel at 21.3.
The panel's estimates were generated August 8, 2026, price-blind, from the data card described below; market prices were re-fetched October 13, 2026. Models are frequently wrong, and the market price reflects real traders' money. Our full graded record, including the events we have lost to the market, is public. These are market prices and estimates, not predictions of fact and not financial advice.
Why Both Sides Expect A Democratic House
The president's party has lost House seats in 18 of the 20 postwar midterms, an average of 25.6. The two exceptions, 1998 and 2002, each needed a dominant national event to flip the usual referendum dynamic, and nothing like that is on the board now. The panel's last firm polling read, from late June, had the generic ballot at Democrats +5.0 and presidential approval at a net of −17.8. Midterm losses run worse for presidents that far under water. The panel is more cautious than the market, 72.7 percent against 90 cents, because of the weeks that were still to run when it priced this, but the two readings point the same way.
Why The Panel Fades A Democratic Senate
Democrats need a net gain of four seats, and only four Republican-held seats were rated competitive on the panel's August 8 read. Every other Republican seat, including the open ones in Alabama, Iowa, Kentucky, Montana and Wyoming, sits in a state the party wins by double digits. Three Democratic seats are competitive too, and Michigan is a true tossup.
| Seat | Held by | Status | Rating (August 8) |
|---|---|---|---|
| North Carolina | Republican | OPEN (Tillis retiring) | Lean D flip, the best target on the board |
| Maine | Republican | Collins, incumbent | Tossup |
| Alaska | Republican | Sullivan, incumbent | Tossup |
| Ohio (Special) | Republican | Husted, appointed | Tossup |
| Michigan | Democrat | OPEN (Peters retiring) | Tossup, a live Republican flip chance |
| Georgia | Democrat | Ossoff, incumbent | Lean D |
| New Hampshire | Democrat | OPEN (Shaheen retiring) | Lean D |
So a Democratic Senate means winning essentially every competitive Republican seat in the country while holding all three defenses. Lose Michigan and the requirement becomes a fifth pickup from the safe-Republican tier. A House wave lifts a party's candidates a few points everywhere, which flips dozens of close districts, but a few points does not turn Alaska or a Maine incumbent into a safe seat. In 2018 Democrats gained 41 House seats and still lost two in the Senate, because the map decided the upper chamber. Every model on the panel made the split its single most likely outcome for that reason.
The Case For A Republican Hold
The market prices a Republican hold at 10 cents and the panel blends it at 23.5. Three of the six models opened with the Republican hold as their most likely outcome, reasoning from midterm gravity and the map, then moved to the split after weighing the House base rate. GLM kept a unified Republican Congress as a loud second at 41 percent, arguing that low presidential approval could prove more decisive than the generic ballot. If the June generic-ballot lead has faded since the panel's last polling read, this is the outcome that benefits. The reverse split, a Republican House with a Democratic Senate, is nobody's base case at 0.8 cents; the panel prices it like a lottery ticket at 3.8.
What Moved Since October 10
The slide stopped. Kalshi's separate Senate market closed at 60 cents on October 9 and again on October 10, its lowest closes since September 20, then put in 61 on October 11 and 62 on October 12, and it is 62 now, up one from this page's last update. The sweep is 61, up one, after a 59 close on October 10 that was its lowest since September 20. The split the panel favors is still 30. The Republican hold is 10 cents, down one, and the reverse split is 0.8 cents, down from 0.9. The House market is 90, up one from this page's 89 stamp, and has closed at 90 every day since October 7. Kalshi's news desk ran the same numbers on October 12, 90 and 62, and framed the Senate price against March 10, when the same market had Republicans at 56 and Democrats at 44.
Talarico won back half of what he lost. At the last update I wrote that a four-cent drop on a candidate who was already back on the trail was the kind of move a market gives back if the next poll holds, and two of the four cents came back: James Talarico closed at 62 on October 9, 63 on October 10 and 11, 64 on October 12, and is 65 now, with Ken Paxton at 36. Kalshi's news desk had him at 64 on October 12 and reported that unsubstantiated claims about his whereabouts had circulated on social media during the nine days he spent off the trail with the flu; his spokesperson, J.T. Ennis, posted on Friday, "Hate to disappoint the conspiracy theorists, but James is still alive and meeting with voters at ACL today." The open question in the race is now a debate. The desk's week-ahead note has President Trump calling for one at a San Antonio rally with Paxton on October 7, Talarico accepting, and Paxton yet to agree; the desk's Texas post, citing the Texas Tribune, says Paxton has yet to accept any debate invitation. Talarico's line to MS NOW: "He has asked for proof of life. I'm asking for proof of spine from him." He is still two cents under his 67 closes of October 6 and 7.
The seats split while the chamber ticked up, and that is the finding of the week: Senate control rose a cent while four of the nine seats on this page moved toward the Republican. Three went the Democrat's way. Alaska is 75 for Mary Peltola, up two from 73. Ohio is 60 for Sherrod Brown, up one, after two closes at 60. Texas is the third. North Carolina, Michigan, Iowa and Kansas each gave a cent to the Republican. Roy Cooper is 95.3 cents in North Carolina, down from 96.3, on four straight lower closes since his 96.9 of October 8, back to where he closed on October 4 and still the surest flip on the board. Michigan is 67 for Abdul El-Sayed, down one, and it has closed at 67 four days in a row, parked at the low it hit after his October 8 debate with Mike Rogers; the desk's week-ahead note has Rogers breaking with Trump at that debate on Canada tariffs and on the conflict with Iran, and El-Sayed taking the attacks on foreign policy. Iowa has moved toward the Republican two updates running: Ashley Hinson is 59 cents to Josh Turek's 42, from 58 and 43, and her 59 close on October 12 was her highest since she closed at 60 on September 29 and 30. Maine and New Hampshire held: Troy Jackson 58, Susan Collins 43, Chris Pappas 90.
The seat the frozen panel list never had is holding where the news desk left it. Kansas is 63 for Roger Marshall, up one from the desk's 62 of October 8, against Adam Hamilton at 39; Marshall closed at 70 or 71 every day from September 26 through October 1, so the Cook Political Report's move to Toss Up is still priced in.
Last update's story was the slide this one interrupted. Between this page's October 7 and October 10 updates the Senate market went from 65 cents to 61 and the sweep from 65 to 60, in the week of the first Maine and Michigan debates and Talarico's absence in Texas. Kalshi's news desk put the Michigan drop after the debate at six points, from El-Sayed's 73 close of October 5 to 67, and quoted NBC News on a debate that "veered into mean-spirited sniping." It priced Collins at 44 the day after her debate, citing a Marist poll with Jackson at 51 and Collins at 47 among registered voters. And it had Marshall at 62 in Kansas on October 8, down from 82.8 on September 5, after Cook moved the race to Toss Up and Cook's Jessica Taylor wrote, "At this point, the question isn't whether Democrats will gain seats, but how many," revising the range of potential Democratic pickups to two to six seats.
That week sits on top of September's run, which is still the bigger move. The sweep, 44 cents when this page opened on August 8, closed between 46 and 48 cents every day from August 18 through September 13, then went from 48 to 59 in four trading days, September 14 through 17, when Kalshi's separate Senate market flipped to Democrats. Kalshi's news desk marked that flip at 52 to 48 on September 14, pointing to an Associated Press report in which Senate Majority Leader John Thune told South Dakota's KELO-TV, "I'm a realist. I don't ever try and sugarcoat things. I think it's a competitive environment right now," and quoting Senate Minority Leader Chuck Schumer, "We found new states – Iowa, Texas – which people a year ago weren't even paying attention to." Time's Philip Elliott, quoted by Kalshi's news desk on September 29, reported that the Senate Republicans' campaign chairman, Tim Scott, told senators the committee's priority was "saving GOP-held seats in Texas, Iowa, Maine, and Alaska," according to a person who listened to the briefing.
The panel's numbers stay frozen where August 8 left them, so the sweep gap it fades, 26.5 points when this page opened on August 8 and 42.5 at the last update, is 43.5. The narrowing I noted last time lasted one update. Democrats still need a net gain of four seats. If Texas, Iowa and now Kansas are truly in play, winning four no longer means winning every competitive Republican seat in the country, and the market is closer to right than the panel. If they are not, and the debate week in Maine and Michigan was a preview rather than a blip, 61 cents is standing on the same seat list the panel's sweep call put at 17.5. The panel has not been re-run since August 8; its four-way call stays on the public scoreboard and gets graded against the result either way.
The Senate Races That Decide It
Each row links to that race's full model verdict.
| Race | Seat | Cook / Sabato rating (August 8) | Our verdict |
|---|---|---|---|
| North Carolina Senate | OPEN, Tillis retiring | Lean D flip | Cooper vs. Whatley |
| Maine Senate | Collins (R) incumbent | Tossup | Collins vs. Jackson |
| Georgia Senate | Ossoff (D) incumbent | Lean D | Ossoff vs. the field |
| Michigan Senate | OPEN, Peters retiring | Tossup | El-Sayed vs. Rogers |
| Minnesota Senate | OPEN, Smith retiring | Likely D | Flanagan vs. the field |
| New Hampshire Senate | OPEN, Shaheen retiring | Lean D (Sabato) | Pappas vs. Sununu |
| Iowa Senate | OPEN, Ernst retiring | Likely R | Hinson vs. Turek |
| Texas Senate | R-held (Paxton primary) | Lean R | Paxton vs. Talarico |
The chamber-level boards from the same panel: House Control 2026, 2026 Senate control and the full Balance of Power four-way breakdown. New to election contracts? Start with how election prediction markets work.
Every verdict above is stored as a graded row on our public model scoreboard, and each model's four-way call gets scored against the actual result when this market settles, win or lose.
This analysis advocates for no party and no outcome.
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