47% opposed, 47% in favour, including 10% of AfD voters (that makes sense when you consider protest votes... yes they're idiots but not terminally so). Opposed also includes "we should deal with them in other ways", i.e. naive liberals.

But that doesn't matter as ultimately the constitutional court will have to decide, and I'll go out on a limb and say that it's almost guaranteed they'll outlaw. Before that happens, though, either the government, Bundestag or Bundesrat will have to actually start the proceedings. That very much is a political decision.