That’s not what the NY polls have been showing. Trump’s been polled at 64% and up 52% over the next contender in NY. Trump will get his 50% plus of the vote and may push 60%.
That was one poll taken about a month ago, and no other poll agreed with it - in other words it was an outlier. He has been averaging in the low 50's over the past few weeks, about 30 points ahead. He will win the state easily, but he will not sweep all of the delegates.