But there's another reason behind Hillary's failing campaign. People want the Clintons to go away, and that is a bad sign for Democrats across the board. Republicans are in power at just the right time. Conventional political wisdom states when the electorate is happy and prosperous, incumbents usually win. Such is the case with the Republicans in Congress right now.
People perceive the economy as stable and strong.
And this year there will be more Republicans up for reelection than Democrats. Add to this equation the fact Democrats are having a hard time fielding candidates. Many Republicans are running unopposed, either because their opponents dropped out or because Democrats couldn't find someone to run against the Republicans. Ultimately, this means Republicans should be able to hold onto their majority in the House, if not gain some seats. And the Senate is solidly Republican and will see at least two to three more Republicans becoming Senators.