It's not like the major parties woke up one day and put forth Clinton and Trump and told the plebs "vote one or the other". The US especially has a very extensive election process, with the party primaries and all, plus, there are also minor parties which do get votes. Is it really true that out of all the democratic and republican candidates at the primaries, and out of all the minor party candidates, none of them were pro-privacy? Or more likely, some of them were pro-privacy, but people voted for others because they don't see privacy as the be-all end-all of life issues.

I don't think the ~15% of people who are at poverty level care as much about privacy as they do about getting a better job or getting proper healthcare, for example. You'd have to form a pretty strong voting bloc just to offset those votes.