Cook Political Report Shifts 15 House Races Toward Democrats, Writing That the GOP Is "On Track to Lose" Its Majority

The nonpartisan Cook Political Report on Friday, September 25, 2026, shifted its ratings in 15 U.S. House races toward Democrats, with House editor Erin Covey writing that Republicans are "on track to lose their House majority this November" despite a push for mid-decade redistricting, a large campaign cash advantage, and an opposition party the analysis describes as unpopular. Democrats hold 215 seats and need a net gain of only three to take control, and Cook's most likely outcome is a Democratic gain of 5 to 15 seats, which would produce a House of 220 to 230 Democratic seats in 2027, what the analysis calls "a fairly slim majority in modern U.S. history." The full ratings overview is published by The Cook Political Report, and the story is being tracked across outlets indexed by Ground News.

What happened

Cook's post-shift count puts Democrats favored in 208 House races rated Solid, Likely, or Lean Democratic, against 205 favored for Republicans, a narrow but Democratic-leaning map six weeks before Election Day. The firm's September Battleground District Project poll of likely voters found Democrats ahead 49 percent to 47 percent. Unlike 2018, the last midterm under a Republican president, Cook writes that "the most competitive House races are almost entirely in districts that President Donald Trump won," and it attributes the shift "in large part due to his handling of the economy," saying the president "is now deeply underwater and is dragging down Republican House members and candidates across these districts." Cook adds that the range "could shift further in Democrats' favor over the next five weeks if Republicans are unable to effectively stem the bleeding." The same week, Cook shifted three Senate races toward Democrats in a September 23 analysis by Jessica Taylor and now calls the Senate "a true toss up." The midterm environment in this news cycle also includes the Supreme Court's Friday revival of the Trump administration's expanded SAVE voter-citizenship database and its rejection, for a third time, of a Trump-backed Missouri congressional map.

Why it matters

House control turns on a margin of three seats, and a forecaster that rates races rather than predicts outcomes moving 15 of them in one direction is a measurable change in the competitive landscape, not a poll. Cook's finding that the battleground sits almost entirely in districts Trump won means Republican incumbents cannot rely on the district-level advantages that helped the party in prior cycles, and the analysis ties their exposure directly to the president's economic standing, high prices, and, per a Ground News summary of the story, "the war in Iran." The Senate side matters as well: with three races shifted toward Democrats and the chamber rated a true toss up, the same ratings cycle points to potential losses for Republicans in both chambers. The concurrent court rulings on voter-citizenship data and the Missouri map add legal and administrative variables to an environment already moving against the party in power, according to the analyses cited.

How it is being covered

Ground News indexes 14 sources on the story, with a right-leaning tilt of 57 percent right, 29 percent left, and 14 percent center, and 5 of the 14 rated high factuality or above. The Daily Caller, in an analysis by commentary writer Mary Rooke, framed the news as "Major Midterm Forecaster Delivers Grim Update For Republicans," arguing "It won't be much of a shock if Republicans lose control of the House after November" and that "It's not necessarily that voters are putting their faith in Democrats as much as they are disappointed in what Republicans have produced after being handed a historic mandate in 2024." Ground News' coverage note flags that "This news story only has 14% Center political bias coverage," meaning centrist outlets are largely absent from the mix even as right-leaning commentary engages the forecast directly.

What to watch

Whether Republicans can stabilize the map in the five weeks Cook identifies, since the analysis states the range could move further toward Democrats if they cannot. The Battleground District Project's next round of polling, given the current 49 to 47 likely-voter margin, and any further ratings shifts in the three Senate races Cook moved on September 23. The practical effects of the Supreme Court's SAVE database ruling and its repeated rejection of the Missouri map, both of which shape who is on the ballot and how districts are drawn. And whether the president's economic standing, which Cook names as the driver of the shift, improves enough to alter the district-level picture before November.

By the numbers

Source snapshot