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US Midterms 2026
15SEP

Cook moves six seats, all one way

3 min read
14:21UTC

Cook Political Report changed six House ratings on Thursday 3 September and moved every one toward the Democrats. Silver Bulletin's new FLIPR model, launched on Tuesday 11 August, then moved on a court order rather than a poll.

PoliticsDeveloping
Key takeaway

Cook shifted six House seats toward Democrats with no move in the other direction.

Cook Political Report published six House rating changes on Thursday 3 September and moved every one of them toward the Democrats.⁠1 Michigan's 10th and Florida's 14th went to Toss Up. Ohio's 15th and 10th and Colorado's 3rd fell from Solid Republican to Likely Republican, and Michigan's 8th rose from Lean Democratic to Likely Democratic. Nothing moved the other way. Cook rates every House district on a seven-point scale and revises in batches, so a batch with no counter-move is the part worth noticing.

Florida's 14th repays a second look. Kathy Castor is the sitting Democrat there, yet the seat was rated Lean Republican, because a rating describes the district and Florida's 24R-4D map pushed hers rightward. A long-serving Democrat in a Republican-leaning seat now sits in a toss-up. The batch follows a summer in which Sabato's Crystal Ball moved three governor's races in July and the president's approval reached the worst reading of either of his terms.

Silver Bulletin launched its 2026 forecast model on Tuesday 11 August. Forecast with Leading Indicators, Polls and Expert Ratings (FLIPR) runs 40,000 simulations per update and forecasts House, Senate and gubernatorial races jointly, so it can price a Republican Senate alongside a Democratic House rather than treating the two as separate bets.⁠2

Its numbers moved after the Missouri ruling. FLIPR's estimate of Democrats winning House control went from about 81 per cent to about 83, and its average simulated Democratic seat count from 230 to 231. Its estimate of Emanuel Cleaver holding Missouri's 5th District went from 25 per cent to 98.⁠3 A court order rather than an opinion shift produced that jump, so it says nothing about what voters think. Silver Bulletin publishes these as one model's outputs, not as a statement about what happens on 3 November.

Deep Analysis

In plain English

Two different ways of tracking which party is likely to win the House both moved toward the Democrats this week. Cook Political Report, which uses expert judgment, shifted six individual House races in the Democrats' favour and none the other way. Separately, a statistical model called FLIPR, which runs tens of thousands of simulations, jumped its Democratic control estimate from about 81 to 83 per cent, and its estimate that Missouri Congressman Emanuel Cleaver keeps his seat leapt from about 25 to 98 per cent after Missouri's court ruling on the map.

Deep Analysis
Root Causes

The scale of Cleaver's swing traces directly to Missouri's Supreme Court ruling suspending HB 1: the district's competitiveness depends entirely on which map is used, and a simulation model updates that input instantly, while a qualitative service like Cook adjusts ratings on its own review cycle.

That difference in update mechanism, not disagreement over direction, explains why the two outlets' reactions differ so much in size.

What could happen next?
  • Meaning

    Missouri's court ruling had an immediate, quantifiable effect on a single House race's national forecast, showing how much one state's redistricting fight can move overall control estimates.

  • Risk

    If Missouri's map fight reverses again, through the pending SCOTUS stay or the November referendum, FLIPR's Cleaver estimate has no fundamental basis to hold at 98 per cent.

First Reported In

Update #16 · Missouri suspends its map, and votes on it

Cook Political Report· 7 Sept 2026
Read original →
Different Perspectives
Department of Justice (DOJ)
Department of Justice (DOJ)
DOJ appealed to the 9th Circuit after Judge David O. Carter did not rule by a noon deadline on 22 October that DOJ itself had set, seeking to have California set aside mail ballots from more than 20,000 listed voters. Its case is that ineligible votes cancel lawful ones; the panel dismissed the appeal 2-1 on 26 October.
Lower Costs Now
Lower Costs Now
Lower Costs Now reported $7.37m in Kansas on 24 and 25 October, part of $65.65m in Senate races since its first independent expenditure on 1 October, including $17.21m for Josh Turek in Iowa. Its FEC filings show $50.18m raised by 14 October.
MAGA Inc
MAGA Inc
MAGA Inc, the super PAC aligned with Donald Trump, filed $7.20m against James Talarico on 22 October, taking its Texas spending to $37.65m. Of that, $30.12m is against Talarico and $7.53m is for Ken Paxton, the Republican nominee.
Senate Majority PAC (SMP)
Senate Majority PAC (SMP)
SMP's pre-general report shows it spent $108.70m from 1 to 14 October, including $65.0m to WinSenate and $10.0m to Texas Forever, and ended with $32.72m. Texas Forever has reported $19.40m against Ken Paxton since 1 October.
Senate Leadership Fund (SLF)
Senate Leadership Fund (SLF)
SLF's pre-general report shows $88.42m in cash on 14 October and $18.98m raised in the fortnight, none of it from Elon Musk. It has since reported $12.07m against Sherrod Brown in Ohio, and its $2.7m to Plains PAC preceded that committee's first Kansas buy on 25 October.
National Republican Senatorial Committee (NRSC)
National Republican Senatorial Committee (NRSC)
The NRSC's pre-general report shows nothing spent with Ashley Hinson in Iowa, or with its nominees in six other states, from 1 to 14 October, after $5.54m with Hinson in September. It took no new loan and ended the fortnight with $25.20m in cash and $20m of debt.

Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Editorial standards.