Both parties have flooded battleground states with advertising since Biden withdrew from the race

In the four weeks since President Joe Biden dropped out and upended the 2024 presidential race, both parties have unleashed a flood of advertising, blitzing national airwaves and battleground states with total of nearly $300 million in spending, including TV and digital ads.

During that crucial stretch, including reservations through this Sunday — four weeks since Biden withdrew, from July 21 to August 18 — Democrats have outspent Republicans by about $173 million to about $119 million, according to AdImpact data.

Seven battleground states have been the focus of more than $212 of that ad spending, and Pennsylvania leads all others by a wide margin, accounting for $70.6 million of the total.

And across those seven key battleground states over the four-week stretch since Biden dropped out, Republicans lead Democrats in ad spending, by about $109 million to $99 million.

Here’s the breakdown of ad spend in other states:

• Michigan: $38.1 million
• Georgia: $33.3 million
• Wisconsin: $26 million
• Arizona: $22.7 million
• North Carolina: $12.4 million
• Nevada: $9.4 million