[Trump20162020]

We've already had a national primary with over 20,000,000 votes, and the results are Trump winning by about double digits.

Trump: 7,827,249 (37.10%)
Cruz: 5,741,583 (27.22%)
Rubio: 3,467,569 (16.44%)
Kasich: 2,808,917 (13.32%)

[TexasCruzin]

And Trump’s rate will go up with his wins in the northeastern states.