Since President Joe Biden withdrew from the race and Vice President Kamala Harris became the nominee, Democrats have significantly outspent Republicans on advertising, with a total of $921 million compared to $569 million. This substantial lead is attributed to Democrats' advantage in both national and digital advertising, with Harris and her allies outspending the GOP by over $50 million in each category.
In battleground states, the advertising competition has been more closely contested, with Republicans expected to gain an edge on the airwaves in critical states in the final weeks of the race.
