Republican candidates have significantly increased their advertising expenditures in Senate and House races as they face declining poll numbers in the run-up to the November midterm elections. Over the past three weeks, Republicans have spent an additional $434 million on ads, representing a 46 percent increase for Senate races and 36 percent for House contests, according to data from analytics firm AdImpact.
This surge in ad spending comes amid growing voter concerns over inflation and the cost of living, issues that have weighed heavily on President Donald Trump’s approval ratings. Rising fuel prices, partly attributed to the ongoing conflict involving Iran, have contributed to this inflationary pressure, with diesel fuel averaging about $6.30 per gallon—more than 70 percent higher than the previous year. This increase has been particularly impactful in rural areas, where transportation costs constitute a larger share of household expenses.
Despite these economic challenges, President Trump has dismissed concerns about rising costs as a “hoax,” a stance that has fueled unease within Republican ranks about their prospects of maintaining control of Congress. Charles Franklin, a professor and polling program director at Marquette Law School, noted that inflation and the cost of living remain the top voter concerns and that Trump’s poor standing on these issues is a liability for the party.
Some Republican Senate candidates have sought to distance themselves from Trump’s trade policies, particularly his tariffs on Canadian goods, which have drawn criticism from representatives in border states. Politicians such as Mike Rogers, a former congressman running in Michigan, and Senator Susan Collins from Maine have publicly opposed these measures, highlighting the economic dependence of their constituencies on cross-border trade.
In historically Republican strongholds, Democrats are making gains. In Kansas, where Democrats have not won a Senate seat since 1932, recent polling shows a statistical tie between incumbent Republican Roger Marshall and Democrat Adam Hamilton. Republican ad spending in Kansas has jumped from $5 million to $21 million since late September, while Democrats have increased their spending by $20 million.
Other competitive races have seen substantial spending from both parties. In Florida, Republicans have increased their ad outlay to $22.5 million by mid-October to defend the Senate seat formerly held by Marco Rubio, an increase from $7 million three weeks earlier. Conversely, Republicans have pulled back investment in North Carolina and Georgia, where Democratic candidates have built notable leads, including a 10-point advantage in North Carolina, a state carried by Trump by more than three points in 2024.
The Texas Senate race has emerged as the most expensive contest this cycle, with total ad spending surpassing $503 million. Within the past three weeks, Republican expenditures in Texas have surged 131 percent to $232 million. Democrat James Talarico currently holds a narrow lead over Republican Ken Paxton, the state attorney general endorsed by Trump. In Iowa, Democrats have also increased ad spending by 79 percent amid efforts to flip a seat the state last sent a Democrat to in 2008.
As the midterms approach, both parties are deploying significant financial resources in key battleground states, attempting to sway voters in a climate shaped by economic concerns and evolving political dynamics.