So what is the national popular vote? What is the One could make up all sorts of numbers. Anyway, will be interesting.
The national popular vote is a summation of independent state popular votes for their respective slates of electors to the Electoral College. The electors, in turn, vote for the President.
Since the people do not vote directly for the President, there is no issue with equal protection because their vote is protected within their states when they vote for their desired slate of electors to the Electoral College.
-PJ