Simple. The Electoral College prevents one man one vote.
Manipulating vote numbers by zip code so some count more or less than others. not justifiable in a civil society.
An outdated relic is a  formula that fakes democratic principles indeed is what we have.
How to argue against one man one vote is to favor contrivance and manipulation.
And no partisan force can argue the logic from a partisan view. 
It is a contrivance that denies one man one vote no matter how else Electoral College  is explained.
The problem with numerical or popular voting as a system to which to change is the inertia and the centuries that have ensued down this wrong path. 
To support that my vote will count more than yours is ridiculous on its face.
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