September Democratic and Republican ad spending in select Senate races
Top 10 races by total spend; includes video ad buys and reservations from Sept. 1-30, 2026 as of Sept. 11
A range plot showing top 2026 Senate races by ad spending and reservations for September. Ohio's race is the highest, at $72.1m, followed by North Carolina ($39.2m) and Michigan ($38.0m). In all but two races shown, Republicans have outspent Democrats.
