As the 2024 election looms, political advertising for both parties is flooding the airwaves and internet — and the broadcasters and tech platforms getting paid for those ads have long fought efforts to expose the identities of the big-money interests that are funding them.

The marketing onslaught is funded in part by dark money groups, which aren’t required to disclose the corporate interests that back them. For years, enriched by political advertising, the broadcast and tech lobbies have fought efforts to rein in dark money spending. By doing so, they have prevented voters from uncovering the corporate interests behind the unending ads, so they can understand what’s really motivating the ad blitz.

Now, broadcasters and tech companies are cashing in.