- U.S. midterm election advertising is projected to reach a record $11.6 billion, surpassing the 2024 presidential cycle.
- Intense Senate and governor races, along with costly ballot measures, are driving the surge.
- New ad categories like AI and online gambling are contributing to the unprecedented spending.
A New Benchmark for Political Advertising
AdImpact, in a report published June 11, 2026, projects total ad buys for the 2026 midterms will hit $11.6 billion, “shattering” the prior record set during the 2024 presidential election. The estimate underscores a dramatic escalation in political spending, with Senate races alone expected to draw $3.4 billion in media buys.
The surge is fueled by a confluence of factors: a high number of competitive “majority-defining” Senate and governor contests, expensive ballot measures that add issue-advocacy dollars, and accelerated fundraising by campaigns, parties, and super PACs. Newer entrants, including AI-enabled advertising and online gambling firms, are also pouring money into political ads, expanding the traditional spending base.
“This is shaping up to be the most expensive midterm ever, by a wide margin,” said a media buyer familiar with the projections. The race for control of Congress and key statehouses is pulling in massive infusions of outside cash, with ad inventory tightening in major media markets.
The trend reflects a broader normalization of high baseline political ad budgets, as digital and AI-driven targeting allow campaigns to reach voters more efficiently but at higher volumes. Without a deal to curb spending, the 2026 cycle is on track to redefine the landscape for political advertising.