Comment by random3

You are (very) naive and seem to miss how most elections are won or work even. Perhpas you also think you're not getting influenced yourself.

It's the same argument (or puzzle) about how (presumably stupid) ads work in general.

Schneier makes a clear point there,comparing the two, but if you need more examples, you should study the subject. Maybe look at Brexit, or the recent issues in Romanian elections (https://www.bbc.com/articles/cqx41x3gn5zo).

Or, if you need more quantitative information, look at ad spend (and ask yourself why) and look at campaign fundraising and ad spending (or even the messaging around it) and ask yourself why again.