Excluding the State Senate, New York wins by a large margin. Honestly, I couldn't come close to explaining that aberration incarnate of a legislative body, outside of people just wanting to retain their incumbents.
Gerrymandering.
Any chance of it being replaced with a Democratic gerrymander now that the Governor is a Democrat? I'm guessing not since the State Senate Republicans would raise a colossal fuss, though it's a thought.
No chance, unless the Republican-controlled State Senate decides to approve it for some reason. Odds are likely that the next one (2020) will be however, given that the Republicans barely held on this year.
Or the Democrats could try to draw themselves a more favorable map mind-decade like Delay did in Texas, assuming they win the State senate back in 2012.