As a EU citizen, I don't care? People are not swayed by political ads. They're swayed by influencers who push political agendas covertly.
I can actually give a very specific real life example of political ads working because I have a friend who was part of the campaign. In Ohio there was a constitutional amendment on the ballot to legalize abortion. The orgs that spent millions of dollars getting it on the ballot were constantly polling to figure where they stand in terms of it passing. As a just in case they made a "break glass" ad campaign which talked about a 10 year old rape victim that had to be driven across state lines to get an abortion. At the 11th hour a few days before the vote they realized it wasn't going to pass. So they took that ad and blasted it across the state, you legitimately couldn't watch TV for more than 30 minutes and not see it at least twice. It covered every streaming service, youtube, facebook ads, tv. The polls went from 48-49% to almost 60% in favor and it passed.