The democratic party has Obama's past 8 years going against them for 2016.
The cry to take back America (make what ever floats your boat about what that infers) will definately motivate enough of the silent majority to make sure the current trend in America gets stopped and reversed.

And backing Clinton is another motivation for a lot of people who do not want more of the same with another candidate who cannot be trusted by track record.

It is extremely doubful the same number of we the people can be fooled again.
And even more doubtfull that all who did not vote in 2008 and 2012 will let that happen again.