In New York, Trump has been consistently polling in the 30% range

The most recent poll was conducted during the week before the Republican National Convention.

Trump confident New York is winnable.  (Albany Times-Union, 7/13/2016)

"I can win New York," he said in an interview with the Albany Times Union in April, just days before his resounding victory in the state's primary. "I think I'll end up winning New York, based on jobs, on the economy, and I think we'll win it soundly." If you think it sounds like a stretch, you're not alone.