Romney got 37.1% in CA and 35.2% in NY. Trump is a much weaker candidate than Romney, and even in his home state, he's trailing Hillary by 30 points. With Johnson also in the mix, I wonder if it's possible for Trump to get below the 30% threshold.
Interesting fact: Dole got 30.6% in NY in 1996. In 1964, even Goldwater managed to get 40.8% in CA and 31.3% in NY.
Lotta stubborn SoCal ancestrals held out for Goldilocks, especially so since Nixon and Knowland both endorsed him...these same ancestral snoots were also the reason poor Mr. Salinger didn't get to stay in the Senate while an unqualified actor did, making that the only losing high-profile Democrat that year.
It took too damn long [seriously Carter and Dukakis totally should have won], but 1992 finally knocked the teeth out of those types on the Presidential level, thus denying trump the same opportunity.