How Cook Political Report House Ratings Work

The seven point scale

The Cook Political Report rates all 435 U.S. House races on a seven point scale: Solid Democrat, Likely Democrat, Lean Democrat, Toss Up, Lean Republican, Likely Republican, and Solid Republican (Cook Political Report, About CPR House Race Ratings). The scale measures competitiveness for the next general election. It is not a poll average. It is not a prediction market price. It is an analyst judgment published with a date and a named editor, and newsrooms treat the board as a shared map of risk.

Solid means the incumbent party is expected to hold with little real doubt. Likely means the incumbent party is still favored, but the race is no longer treated as locked. Lean means a clear but contestable edge. Toss Up means neither party is favored enough for Cook to call a lean (Cook Political Report House ratings methodology). Those four ideas, applied evenly to both parties, are the whole machine.

What a one notch move actually says

On August 13, 2026, Cook moved Ohio's 10th, Ohio's 15th, and Colorado's 3rd from Solid Republican to Likely Republican (Cook Political Report, August 13, 2026; 270toWin, as of August 13, 2026). That is the smallest step toward competition on the scale. The seats are still expected to stay Republican. They are no longer filed under the column that means almost no general election drama.

Three days earlier, on August 10, Cook had moved Ohio's 7th from Likely Republican all the way to Toss Up after Rep. Max Miller remained on the ballot (Cook Political Report, August 10, 2026). That was a two notch jump into the competitive core. The August 13 moves are smaller and cleaner: Solid becomes Likely, and the Toss Up count stays at 19. Readers who treat every rating change as a flip forecast are misreading the ruler.

How the board adds up for a majority

A full House majority is 218 seats. Cook's August 10 summary, before the three seat Solid to Likely shift, listed 184 Solid Democratic seats and 185 Solid Republican seats around a competitive band of 19 Toss Ups, 10 Lean Democratic seats, 9 Lean Republican seats, 11 Likely Democratic seats, and 17 Likely Republican seats (Cook Political Report, August 10, 2026). After August 13, Solid Republican is 182 and Likely Republican is 20 if no other categories changed.

Campaigns and donors still pour the bulk of competitive money into Toss Ups and Lean seats. Likely seats get secondary attention. Solid seats get almost none unless a scandal or a redistricting shock reopens them. That is why US Political Rank's ranking of the most competitive House districts of 2026 builds from Toss Up and Lean consensus across Cook, Sabato's Crystal Ball, and Inside Elections rather than from Solid seats that just slipped one notch.

What Cook is not measuring

Cook ratings do not measure the quality of a member's legislative work. They do not score integrity, bipartisanship, or effectiveness. Those questions live on other US Political Rank boards, including rankings of senators by legislative effectiveness and bipartisanship. Cook is answering a narrower question: how competitive is this race likely to be in November?

Cook also does not replace certified results. Primary night still decides nominees under state law. Special elections still refill vacant chairs on published calendars. As of mid August 2026 the Clerk lists four House vacancies, and the live party breakdown sits near 218 Republicans, 212 Democrats, one independent, and four empty seats (Clerk of the House; House Press Gallery). Ratings describe risk. Ballots decide membership.

How to read the next move

When Cook publishes a change, read three numbers: the old rating, the new rating, and the Toss Up total. A Solid to Likely shift expands the watch list. A Likely to Lean shift raises the chance of a real contest. A Lean to Toss Up shift puts the seat into the band that usually decides the majority. A move the other way does the reverse.

The August 13 package is a textbook one notch package on the Republican side of the Solid column. Ohio's 10th and 15th and Colorado's 3rd are still Republican favored on Cook's board. The 19 Toss Ups remain the core fight. The American midterm calendar still ends on November 3, 81 days from August 14. Use the scale the way it is written, and the board stays a map instead of a rumor mill.