So far, Trump has received about 35% of the votes cast. A 35% plurality was sufficient to win most of the primaries when the rest of the vote was split between a dozen candidates.
It would still be sufficient in a three candidate race if Kasich could win 33% of the votes. Absent a much better turnout for Kasich, Trump is going to have to start winning a lot more than 35% of the vote to keep winning primaries.
There is no question that Trump will win NY and no one is pretending otherwise. The question is whether Trump will win more than 50% in NY. So far, even with only three candidates left in the race, Trump has been unable to win a majority of the vote in any state.
If Trump cannot win a clear majority in his home state with only three candidates left in the race, then he cannot win a majority anywhere.
Of course your candidate can.
Sure.