In addition to scheduling the Democratic debate on the Saturday night before Christmas during the exact same time as NFL football, Debbie Wasserman Schultz has used a minor scandal to cripple Sanders' access to voter data. It looks like some lower-level staffers managed to exploit a bug in the DNC's software to look at Clinton's own data, but the Sanders campaign both fired the chief staffer involved and itself reported the violation to the DNC. Meanwhile, as the Sanders' campaign points out, its data was just as available -- and there's no way to know that Clinton's campaign didn't look at their stuff too. In fact, as a betting man, I'd wager heavily that Clinton's campaign absolutely exploited the regular flaws in this software and simply hasn't reported itself for cheating.
All the stops are out on the Clinton Express, though. The DNC is wholly in the tank for her.