Oh, ok, so I see that if these deep blue states combining into this compact can lasso some purple states during the times that the purple state may have a Dem majority state legislature into the compact and ultimately can get states representing a total of 270 electoral votes into the group, the net effect is that purple states that voted for the Republican who did not win the popular vote but won the electoral vote with their purple state electoral have disenfranchised themselves and must now award their electoral votes to the Dem despite the fact that the state popular vote was for the Republican
That's right.
Consider the 2000 election. President Bush won with 271 EV to Gore's 266 (one wacky elector abstained, a DC elector who would have voted for Gore protested DC voting status). So, let's call it 271-267, where one state swings it. Colorado voted for Bush 883,754, Gore 738,227, Nader 91,434. Even if the Nader voters went to Gore, Bush would still have won Colorado.
Colorado recently passed the NPV compact. If it had been in place in 2000, Colorado would have voted for Gore despite the majority of the state voting for Bush. Gore would have won Colorado's electoral college votes and the Presidency, despite Colorado giving it to Bush.
The NPV Compact initiative was started in 2001 as a direct result of the outcome of the 2000 election.
-PJ