You still don't understand...
Midterms break down state by state, candidate by candidate. Black turnout may be rising in midterms when measured nationally, but does that mean black turnout is rising in North Carolina? Arkansas? Louisiana? Michigan? IE the states that will decide who wins the senate, as well as which party manages to lose the least amount of seats in the House. And even if it were rising in those states, will it translate to people coming out to vote for those candidates? Are black people excited about Mark Pryor?
The problem for democrats is that a lot of these states have high black, youth, and Hispanic unemployment rates. NC especially. Which is why democrats are talking about impeachment nonstop, and why Al Sharpton literally talks about it every hour on his radio show every day (my mom is an avid listener of his). Impeachment talk fires up the base, specifically black voters who feel Obama is being mistreated, and the hope is that they come out and support democrats. This may work to a degree but ultimately this is year 6 and democrats still can't motivate their base with any actual accomplishments. You've got states like Kentucky where HALF the uninsured are now covered yet Grimes won't talk about Obamacare, and voters are leaning McConnell's way despite his blatant calls for full repeal.
In short, that's why I think democrats are in trouble. The base is hurting, and probably disillusioned after 6 years of this shit.
and you know why this is the case.
In other words:
https://www.youtube.com/watch?feature=player_detailpage&v=ZHhwxoW8laA#t=10