Kasich is not coming within 5 in NY. This should demonstrate why we should take Kasich's double-digit leads in swing states with a grain of salt. Not that it really matters, though.
Exactly. I'll be glad to eat my shoe if I'm wrong, but none of these Republican candidates would come even within 15 points of Clinton or Sanders in New York.
Observe:
http://www.realclearpolitics.com/epolls/2008/president/ny/new_york_mccain_vs_obama-343.html#pollsThere are numerous polls showing, in 2008, McCain within single digits of Obama in New York around this very same time. One poll even shows him winning +2.
What actually happened? Obama won the highest winning margin since LBJ's landslide - 62.88%, and 4 years later, actually did even better
(63.35%) despite the poor recovery, which saw his winning margins dropping almost everywhere else.