Because the compact would become effective only when it encompasses states collectively possessing a majority of the electoral votes, the presidential candidate receiving the most popular votes in all 50 states and the District of Columbia would be guaranteed enough electoral votes in the Electoral College to be elected to the Presidency.
No single state would ever be likely to unilaterally enact a law awarding its electoral votes to the nationwide winner. For one thing, such an action would give the voters of all the other states a voice in the selection of the state’s own presidential electors, while not giving the enacting state the benefit of a voice in the selection of presidential electors in other states. Moreover, enactment of such a law in a single state would encourage the presidential candidates to ignore the enacting state. Such unilateral action would not guarantee achievement of the goal of nationwide popular election of the President.
The National Popular Vote is reallyy about letting the cities of Los Angeles, New York, Philadelphia, Baltimore, and Boston choose the president. The rest of the country won't count at all.
Is that what you are endorsing?
-PJ