It would sure spell the end of Federalism as envisioned by the Framers.
Add to that the amount of fraud it would promote. Under the Electoral Collage, solid Democrat states like New York, Illinois or California have no reason to stuff ballot boxes in presidential elections. The Democrats know they will get the electoral votes of those states. If instead you decide to go by total votes nation wide, there is great temptation to stuff the ballot boxes, especially in corrupt big cities.
The National Popular Vote bill preserves the Electoral College and state control of elections. It changes the way electoral votes are awarded in the Electoral College.
The current state-by-state winner-take-all method of awarding electoral votes (not mentioned in the U.S. Constitution, but since enacted by 48 states), under which all of a state’s electoral votes are awarded to the candidate who gets the most votes in each separate state, ensures that the candidates, after the primaries, in 2012 will not reach out to about 76% of the states and their voters. Candidates have no reason to poll, visit, advertise, organize, campaign, or care about the voter concerns in the dozens of states where they are safely ahead or hopelessly behind.
More than 2/3rds of the states and people have been just spectators to the presidential elections. That’s more than 85 million voters.
Policies important to the citizens of ‘flyover’ states are not as highly prioritized as policies important to ‘battleground’ states when it comes to governing.
States have the responsibility and power to make all of their voters relevant in every presidential election and beyond.
Unable to agree on any particular method, the Founding Fathers left the choice of method for selecting presidential electors exclusively to the states by adopting the language contained in section 1 of Article II of the U.S. Constitution— “Each State shall appoint, in such Manner as the Legislature thereof may direct, a Number of Electors . . .” The U.S. Supreme Court has repeatedly characterized the authority of the state legislatures over the manner of awarding their electoral votes as “plenary” and “exclusive.”
Federalism concerns the allocation of power between state governments and the national government. The National Popular Vote bill concerns how votes are tallied, not how much power state governments possess relative to the national government. The powers of state governments are neither increased nor decreased based on whether presidential electors are selected along the state boundary lines, or national lines (as with the National Popular Vote).