If your wanna change an election why not hack a wider range of targets? I know that "Who gains most?" is one of the best ways to attribute blame in the intelligence world but I have not (like the North Korea / Sony hack) seen evidence that even nearly proves it was a hack directed by the Russian Government. Possibly a malicious sympathiser but hardly state level techniques...
Also, how slow and useless are the NSA that they weren't watching to protect senior people in one of the two major parties in the country? If so many intelligence folks are as sure as they claim to be that it's the Russians, where is the counter-response? You mean to tell me that the TAO can't do better then some leaks about Russian businessmen close to Putin - obviously that is one of his weak points but he doesn't care about that right now. I get that they don't want to reveal warfighting capabilities but seriously - if you think it's really the Russians, throw a shoulder...