Final Week of 2026 Midterms Focuses on How Big a Democratic House Gain Could Be

With the 2026 midterm election set for Nov. 3, spending data suggests the central question in the House is no longer whether Democrats can be stopped, but how large their gains will be.

An NPR analysis found a sprawling competitive landscape. In 70 districts, both parties are putting at least six figures each into closing messaging. Toss-up districts in Michigan, North Carolina, New York and Florida are each drawing more than $10 million. Seven-figure ad buys have also appeared in strongly Republican areas of Tennessee, Oklahoma and Arkansas, and late resources are flowing to districts where Republican-led gerrymandering could backfire.

Republicans currently hold a narrow 218-214 majority, and the political climate tends to hurt the party in power. The latest Cook Political Report ratings favor Democrats in 220 seats, list 17 as toss-ups, and place another 30 as potentially competitive but leaning Republican.

Many districts that were closely contested in the 2024 presidential cycle have moved toward Democrats, particularly the 10 that backed one party's presidential candidate and the other party's House nominee. Those include seats held by Democratic Reps. Adam Gray (CA-13), Nellie Pou (NJ-09) and Marie Gluesenkamp-Perez (WA-03), along with the seat of retiring Republican Rep. Don Bacon (NE-02). According to AdImpact data, Republicans have cut ad reservations in all four districts in recent weeks.

The latest NPR/PBS News/Marist poll gives Democrats a 10-point advantage among registered voters and an 8-point edge among likely voters on the generic congressional ballot. That makes a much wider set of seats competitive on paper, before candidate quality or outside spending is considered.

Cost of living remains voters' top concern, with rising gas prices, tariffs and the ongoing war in Iran adding to economic strain. A record number of congressional retirement announcements, combined with an anti-incumbent mood in primaries, has also shaped the contest.

Mid-decade redistricting has reshaped the map further, following a Supreme Court decision that rolled back more of the Voting Rights Act. Republicans redrew lines to add conservative voters to districts held by Democratic Reps. Marcy Kaptur (OH-09), Don Davis (NC-01), Shomari Figures (AL-02) and Darren Soto (FL-09). Democrats did the same in California, targeting districts held by Republican Reps. James Gallagher (CA-01), David Valadao (CA-22), Ken Calvert (CA-41) and Darrell Issa (CA-48), and independent Kevin Kiley (CA-06). Only Figures' and Soto's districts are now rated as favoring Republicans.

Millions of voters have already cast ballots, and dozens of races are drawing heavy late investment. The most expensive are Michigan's 7th and North Carolina's 1st, each with more than $12 million planned. Others include Florida's 14th, 22nd and 25th, New York's 17th, and Iowa's 2nd and 3rd. Spending also reaches Republican-redrawn seats such as Alabama's 2nd and Tennessee's 9th, and districts Trump won by more than 10 points in 2024, such as Kentucky's 6th and Arkansas' 2nd.

The 70 districts with six-figure spending from both parties voted for Trump by an average of 9 points in 2024. Sixty districts are priorities for both parties' House campaign arms, which points to the Trump administration's unpopularity over the past year. Still, not every race will be close or flip. Many of the Democratic Congressional Campaign Committee's "Districts In Play" gave Trump closer to 60% of the vote in 2024 and have seen little to no ad spending from either party.