Republicans Increase Ad Spending in Senate Races Amid Competitive Midterms

Senator Susan Collins, a Republican from Maine, spoke to members of the media while campaigning ahead of the midterm election at the Fryeburg Fair in Fryeburg, Maine, on October 9, 2026. Republicans are spending hundreds of millions of dollars on advertising in battleground Senate races as they seek to defend competitive GOP seats in the final stretch of the midterms. According to AdImpact data, Republicans outspent Democrats on broadcast TV ads by nearly 100%, totaling $233 million compared to $121 million, but achieved only about 40% more rating points. This disparity is attributed to Republicans relying on outside groups, such as super PACs, which pay higher rates for ads and make significant purchases late in the campaign when inventory is limited. In contrast, Democrats are utilizing discounted rates for candidates and securing earlier, less expensive reservations. Veteran Republican strategist John Thomas noted that Republicans are spending more to achieve less impact on the ground. A better measure of effectiveness is gross rating points (GRPs), which assess the reach and frequency of an ad campaign. In the nine races analyzed, Democrats paid $201 per GRP, while Republicans paid approximately $274. In some instances, Democrats surpassed Republicans in GRPs despite lower spending. For example, in North Carolina, Republicans outspent Democrats by about $3 million on TV ads in September but received about 58,000 GRPs compared to Democrats' 71,000. Republicans began reducing their ad bookings by about $15 million in early October. In Maine, Democrats were outspent by 32% but achieved 6% more GRPs. Even in Texas, where Republicans outspent Democrats significantly, the GRP gap was smaller than expected. A GOP super PAC spent over $22 million to air its top ad, while Democratic nominee James Talarico's campaign spent under $4 million for a comparable ad. Lauren French, communications director for Senate Majority PAC, emphasized that ad costs vary significantly based on timing, with earlier purchases being more cost-effective. In seven of the top nine Senate races by total TV and radio ad spending in September, Democrats paid less per GRP than Republicans, with exceptions in New Hampshire and Alaska. French remarked that Republicans are using their funds ineffectively, as public polling indicates that their ads are not reaching audiences as anticipated. Thomas highlighted Texas as a key example of this trend, where GOP groups are urgently trying to support their candidate, Ken Paxton, by purchasing ad time on national broadcasts due to crowded local markets. This strategy has resulted in national exposure for Texas Senate ads during NFL games that do not feature local teams.