I have a fundamental problem with this. Someone working on an election campaign still has as much of a right to private (professional and personal) communication as you or I do.
If that someone is working for the campaign of a politician/party which supports NSA spying on Americans, he or she has no right to privacy in my eyes. The way I see it, if you want me to respect your privacy, you have to respect mine.
Good, then it should make you angry as well -- Hillary's repeatedly shown herself to be in favor of weakening encryption. Out of all the possible responses to the leak hers was the absolute worst.