These ads have the logo of the news station. SPONSORED as in claiming the news station paid for the ad making it look more official or giving an illusion of journalistic integrity or approval by the station.
Do these stations even know their copywrited logos are used as official campaign ads? Does that compromise their ability to cover the election? (Yes I know they're corrupt AF and manufactured consent) but did they give consent to the campaign?
Forbes
Here's a CBS Evening News one trying to sell people on 
You go to the menu to see the sponsor and this is what comes up.
Advertiser is VERIFIED by Google - BIDEN FOR PRESIDENT
Also The advertiser is responsible for the accuracy of this information which Google has not confirmed.
It seems like something that should be documented, legally checked, and I would love to get statements from the "news" stations who are "covering" the election and their trademarked logos slapped on ads especially under the word SPONSORED. Kind of muddy yea?
Maybe someone familiar with Youtube ad buying can weigh in, but I guess any advertiser can just sponsor a particular video or section of a video?
Years ago I worked on a Google adwords auto-bidding feature for a bit firm... I don't think there was any verification of the ad-buyer controlling the URL which the ads went to (no real point since that URL could look one way to a moderator one day and redirect to a totally different location shortly after go-live).
Yeah, pretty sure that's what's happening.