Republicans and their aligned groups have secured a substantial advantage in political advertising spending as the 2026 midterm elections enter their final stretch.

Data from media tracking firm AdImpact showed Republicans and their allies set to spend about $888 million on ads in Senate, House, and state races compared to roughly $666 million for Democrats and their allies. The projected gap of $221 million covers spending from Monday through Election Day on November 3.

The edge appeared most pronounced in competitive Senate contests. Republicans held an advertising advantage in eight of the top nine Senate races, with gaps reaching as high as $30 million in Ohio. Recent September spending further widened the disparity, with Republican-supported advertisers spending more than $204 million in 10 key Senate races through the first 18 days of the month, $83 million ahead of Democrats.

Party committees contributed to the momentum. The National Republican Senatorial Committee spent $45.9 million in coordinated advertising in August, nearly 46 times the $1 million spent by its Democratic counterpart, according to Federal Election Commission records. The National Republican Congressional Committee also outpaced Democrats on the House side.

Outside groups drove much of the Republican lead. Super PACs linked to President Trump, including No Going Back PAC and Safety and Affordability PAC, reserved tens of millions in additional ads. The Senate Leadership Fund and Congressional Leadership Fund booked hundreds of millions more. Democratic candidates and committees faced steeper challenges, with the Democratic National Committee entering the month $750,000 in debt amid reported internal difficulties.

The overall 2026 cycle stood on pace to become the most expensive in history, with total political advertising projected above $11 billion. Republican cash reserves entering September exceeded those of Democrats by more than $100 million at the national level.

Democrats retained some targeted advantages in specific districts and hoped candidate-level spending could stretch further due to lower ad rates. Still, the broad Republican spending lead positioned the party to dominate airwaves in most battlegrounds heading into November.