Midterm House Races Tighten as Both Parties Pour Hundreds of Millions into Competitive Districts

Republicans retain a slim 218-214 advantage in the House as Election Day approaches, with just under a month left. The Cook Political Report, which issued its initial 2025 midterm ratings in February, listed 39 competitive races, including 18 toss-ups. That figure has risen to 43 competitive districts—22 of them toss-ups—according to the latest Cook update. An NPR analysis notes that more than 90 districts now see active ad reservations and outside spending from both the Democratic Congressional Campaign Committee (DCCC), the National Republican Congressional Committee (NRCC), and Trump-aligned super PACs such as No Going Back.

NPR

Redistricting has altered the precincts of roughly one-in-ten registered voters across several states. Republican-led legislatures, urged by former President Donald Trump, redrew lines in Texas and Florida to create additional GOP-leaning seats, while Democrats pushed changes in California. Strength in Numbers/Verasight polling data shared with NPR shows Trump’s job approval is below average in newly drawn districts of South Florida and the Texas-Mexico border (e.g., TX-28, FL-25). In North Carolina’s 1st District, Democrat Rep. Don Davis now represents a more conservative constituency than in 2024.

NPR

The DCCC has identified over 90 districts on its battlefield map, including 46 “Red To Blue” targets, 26 “Frontline” incumbents, and 19 “Districts In Play.” The NRCC lists 17 vulnerable incumbents on its “Patriots” roster and 27 candidates in open or challenger races under the “MAGA Majority” program. In districts such as Kentucky’s 6th and Arkansas’s 2nd—both won by Trump by 15 points—millions of dollars have been earmarked by both parties, with six-figure outside spending noted in the Arkansas race for Democratic nominee Chris Jones and incumbent Rep. French Hill.

NPR

Ballotpedia tracking indicates that from 2012-2024, Democrats captured 34 % of the districts they targeted, while Republicans won 29 % of theirs. Data from ad-tracking firm AdImpact shows that, despite recent pullbacks in some races (e.g., the North Carolina Senate and Nebraska’s 2nd District), nearly half a billion dollars in ad reservations remain slated through Election Day.

NPR

The convergence of tighter margins, aggressive redistricting, and massive financial commitments suggests that neither party can assume a foregone outcome. Competitive races now extend deep into traditionally conservative areas, and the effectiveness of each side’s targeting will likely determine which party secures control of the House in 2027.

NPR