Under the idea introduced in 2006 by Stanford University consulting professor John Koza, states that join the NPV compact pledge to give all of their electoral votes to the presidential candidate who wins the national popular vote - even if a majority of the state’s voters supported another candidate. If a group of states with an accumulated tally of 270 electoral votes - the bare majority - sign on, the practical effect would be that the popular-vote winner instantly becomes the Electoral College winner as well.
For all the reasons the Founders created the Electoral College, I support the Electoral College and oppose this "national popular vote" compact. It is another in a long line of bad ideas that move us from a federal republic with independent, sovereign states to a national government wherein the states are superfluous.
I predict, though, that this compact would be thrown out the first time a Republican wins the national vote and California votes for the Democratic candidate.