The Republican shift to a 60% share of September congressional ad spending marks a reversal from 2024, when Democrats held 55%, and near parity in 2022. This is the first time this decade Republicans led spend in Senate battlegrounds, where they held a 26% expenditure lead over Democrats through September 30. However, that spending gap translated to only a 7% advantage in actual broadcast airings, with Democrats leading airtime in North Carolina and Ohio despite being outspent in both states.
