A sign is seen as voters line up for the U.S. Senate run-off election, at a polling location in Marietta, Georgia, January 5, 2021.
Mike Segar | Reuters

The 2022 midterm elections are on track to be the most expensive ever as more than $6.4 billion is being poured into TV, radio and digital ads for U.S. House, Senate, gubernatorial and local races, according to nonpartisan ad tracker AdImpact and campaign finance data. Candidates and outside groups have spent almost $50 million on midterm ads running on Facebook and Google alone over the last 30 days, according to data compiled by the companies. The more than $6.4 billion in ad spending already surpasses both the 2018 and 2020 election cycles, according to AdImpact, which estimates that overall ad spending will hit $9.7 billion by Election Day in November.