It’s $5 per person of voting age, which is about Facebook’s ad revenue per user in a month. Think about that: has Facebook ever convinced you of anything? Because that’s 12x the advertising intensity of PAC funding.
The causal inference the article draws is insane. California voters rejected more rent control by a 60-40 margin. Facebook can’t convince more than 0.9% of users to even click on each ad, but somehow a fraction of the level of advertising changed peoples’ minds about rent control?