Reagan was the last one like him.
Reagan won MA twice, NY twice, NJ twice, IL twice, and MD and RI once each. These states are key components of the so-called "blue wall" of 242 electoral votes.
Trump will win all of these states. I think CA has changed profoundly since 1984 and may be out of reach (and, BTW, not because of "minorities").
Ask yourself, which of these states can Ted Cruz win, or even be competitive? And when you answer, correctly, "none", ask yourself, what states can he win that add up to 270?