The battle for the House in 2026 resembles the landscape before Democrats’ 2018 takeover, but with a smaller group of Republican-held districts at risk, a Newsweek analysis has found.
A comparison of Cook Political Report ratings at comparable points in the 2018, 2022 and 2026 campaigns shows that Republicans are again defending more of the central battlefield.
The analysis compares each October snapshot directly with the eventual result; it does not measure changes in Cook’s ratings during the final weeks.
Newsweek used Cook Political Report for the comparison because its seven-category House ratings were available at matched points across all three cycles.
The balance ran in the opposite direction four years ago, when vulnerable Democratic-held seats helped Republicans win a narrow majority.
In October 2018, Republican-held seats accounted for an overwhelming share of the districts Cook placed at the most competitive end of its ratings.
Four years later, Democratic-held districts made up the larger group under threat as Republicans pursued their own majority.
The latest 2026 ratings have shifted the balance back toward Republican-held territory.
Cook rates all 435 House races on a seven-point scale running from Solid Democratic to Solid Republican, with Toss Up at the center.
Its assessments incorporate district partisanship, the candidates, state and national conditions and interviews with campaign professionals.
Those categories indicate relative competitiveness, not guaranteed winners or expected vote margins. A Toss Up favors neither party.
The clearest contrast comes from seats Cook summarized as "Toss Up or worse," grouping districts held by a party but rated as Toss Up or placed on the opposing side of the scale.
Republicans held 45 such seats in October 2018, compared with three held by Democrats.
In 2022, Democrats held 30 and Republicans 12. The October 2026 split is 23 Republican-held seats to 11 Democratic-held seats.
The chart above groups seats by the party holding them at the time of each snapshot, rather than the party favored to win.
The 2026 House Battlefield
Cook’s October 9, 2026 ratings placed 185 seats in Solid Democratic, 16 in Likely Democratic and 12 in Lean Democratic.
On the other side, 174 were Solid Republican, 18 Likely Republican and nine Lean Republican. Another 21 were Toss Ups.
The Republican majority is therefore defending more potentially vulnerable territory, although the range extends beyond genuine coin flips.
Lean signals a partisan advantage, while Likely describes a race that is not considered competitive but could become engaged.
Ratings remain fluid through Election Day.
The important question is whether Republican exposure expands toward the breadth recorded in 2018 or stays concentrated in a smaller collection of districts.
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What Happened in 2018
Cook’s October 12, 2018 board showed a far larger Republican battlefield.
It rated 52 seats Lean or Likely Republican, nearly twice the 27 rated Lean or Likely Democratic.
Official results compiled by the Federal Election Commission (FEC) show that Democrats won 235 seats and Republicans 199.
North Carolina’s 9th District was not certified and remained vacant when the new Congress convened.
The district-level results demonstrate how the wave traveled beyond races considered pure coin flips.
Democrats won all 13 seats rated Likely Democratic and all 14 rated Lean Democratic. They also took 22 of the 30 resolved Toss Ups, while Republicans won eight.
The typical resolved Toss Up was decided by 3.8 percentage points. Democrats also won four districts where Cook had given Republicans the advantage.
Democrats won Georgia’s 6th and South Carolina’s 1st, both rated Lean Republican, plus California’s 21st and New York’s 11th, rated Likely Republican.
Those exceptions included suburban Atlanta, where gun-safety advocate Lucy McBath narrowly defeated Republican incumbent Karen Handel, and coastal South Carolina, where Joe Cunningham edged Katie Arrington.
TJ Cox erased David Valadao’s election-night lead as California counted late ballots, while Max Rose unseated Dan Donovan in a Staten Island-based district that had voted for President Donald Trump two years earlier.
Republicans retained the remaining 21 Lean Republican and 27 Likely Republican races.
Republicans generally won more comfortably in seats that Cook rated Likely Republican than in those rated Lean Republican.
The typical margin rose from 4.2 points to 8.5 points, although Democrats still pulled off several upsets.
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What Happened in 2022
The October 14, 2022 board placed substantially more Democratic-held territory in danger.
Across Cook’s Lean and Likely categories, Democrats held 38 seats and Republicans held 16.
Cook rated 31 of those races Lean or Likely Democratic and 23 Lean or Likely Republican.
Republicans subsequently captured the House with 222 seats to the Democrats’ 213, according to the FEC.
The majority was narrow because Democrats survived in enough of the closest contests to limit Republican gains.
Democrats won all 14 Likely Democratic races and 14 of the 17 Lean Democratic contests.
Republicans took the other three: New York’s 3rd, 4th and 17th districts.
On Long Island, George Santos won the open 3rd District. Former New York City detective Anthony D’Esposito flipped the neighboring 4th, a seat Democrats had held for more than two decades.
In the lower Hudson Valley, state lawmaker Mike Lawler delivered the most politically significant upset. He narrowly defeated Sean Patrick Maloney, who was leading the Democratic Party’s effort to defend its House majority.
Among Cook’s 31 Toss Ups, Democrats won 22 and Republicans nine.
That Democratic advantage did not prevent a change in control because the category contained considerably more Democratic-held seats to begin with.
Washington’s 3rd District provided the sole upset on Cook’s Republican side, electing a Democrat after receiving a Lean Republican rating.
Auto-shop owner Marie Gluesenkamp Perez edged Trump-backed former Green Beret Joe Kent by fewer than 3,000 votes, taking an open seat Cook rated Lean Republican.
The other 10 Lean Republican races and all 12 Likely Republican seats went to Republicans.
The typical Toss Up was decided by 4 points. Lean races were settled by about 5 points, while Likely seats produced margins of roughly 10 points.
What the Comparison Means
The evidence points to a Republican-leaning field of exposure in 2026, but not a replay of 2018.
That earlier map contained a much broader range of endangered GOP seats, including dozens beyond the Toss Up column.
Districts used in 2018 were drawn after the 2010 census, while the later elections use maps produced after the 2020 census and subsequent state-level changes.
Identical district numbers can therefore describe different electorates.
Local factors matter, too.
Candidate strength, retirements, fundraising and controversies can push individual races away from the national environment, making the House board more than a simple reading of nationwide polling.
Movement between categories will now provide the clearest signal.
A shift from Lean to Toss Up removes Cook’s stated partisan advantage; a move from Likely to Lean brings a seat closer to the active battlefield.
The current ratings identify which party is defending more contested ground.
The remaining campaign will determine how much of that territory changes hands.
Methodology
Newsweek compared Cook House ratings dated October 12, 2018, October 14, 2022, and October 9, 2026.
Historical ratings were matched with district results in the FEC’s Federal Elections 2018 and Federal Elections 2022 data.
Toss Ups were not treated as incorrect calls because Cook favored neither party.
Newsweek’s reporters and editors used Martyn, our AI assistant, to produce this story. Learn more about Martyn here.
Contact Newsweek editors on this story: Sam Stevenson and James Debens