CNN reported:
The television ad campaign to defeat Donald Trump was at least a $75.7 million effort, according to the ad tracking firm Kantar Media/CMAG. (Their full estimate: $75,723,580)
It comprised nearly 64,000 ad spots throughout the campaign.
And that’s the figure for broadcast television alone. Anti-Trump ads also ran on cable and satellite television, but the tracking data does not capture that.
A pro-Marco Rubio group spent the most against Trump. Conservative Solutions PAC spent more than one out of every four dollars against Trump — about $19.7 million.