Last night’s New York Democratic Party primary was a defining moment in the sometimes nasty presidential nomination contest between Hillary Clinton and Bernie Sanders. Clinton won a decisive victory, with a margin as of this writing of some 16 percent and a net gain of about 33 pledged delegates. [Note: these results are subject to updates]. Coming at a time when Sanders needs to win virtually every state left by a landslide, his loss to Clinton in New York turns his nomination chances from “nearly impossible” to “pretty much unimaginable.” Perhaps knowing this, Sanders spent yesterday in Pennsylvania instead of New York, supposedly to campaign for next Tuesday’s primaries, but then reportedly left his press corps in Pennsylvania last night and exited back home to Vermont. So the question becomes, what happens now?