For all the talk of WikiLeaks, personally I think the effect on our election was negligible. I agree with Nate Silver what killed the momentum in which Hillary was on was the last minute FBI announcement which in the end turned up nothing. According to the data, voters switched at the last minute.
He explained it here.
Now I know this is going to be dismissed out of hand, nevertheless, the data backs it up.
Does it matter now? No. My only point is that I don't think WikiLeaks had much to do with Clinton's loss.
My other point is that Hilary and mainstream democrats were not rejected and we don't need to change. There may be some bad apples and maybe they may need to voted out. But democrats were not rejected by landside anywhere, we just lost enough not to be able to retake the senate. We need to do better at the mid terms, democrats need to actually get out a vote in the mid term election.