Ad spending in midterm races crosses $1.5 billion

$1.5 billion has been spent on advertising for Senate and House races overall, an increase of $317 million from last week, according to a Washington Post analysis of data from the ad-tracking firm AdImpact.

Ohio’s U.S. Senate race continues to lead midterm advertising, with total ad spending increasing 22 percent over the past week, from $197 million to $240 million.