This Democrat party initiative, which speaks volumes in and of itself, has quietly been gaining momentum for several years. It is an interstate pact designed to guarantee the presidency to the candidate who receives the highest number of overall popular votes across all 50 states and Washington, D.C. It has been largely ignored to date, but the recent election which flipped a number of republican states will bring it into sharp focus (especially potentially Texas).
Currently 18 states have become part of this combact where states pass identical laws binding their state's presidential electors to vote for the winner of the national popular vote, rather than the winner of their individual state's vote. Under this state law, it remains inactive until it is adopted by a cumulative group of states holding at least 270 votes. Currently, those 18 states represent 222 electoral votes. Once 270 is reached, the presidential election will become a popular vote contest giving enormous power to the nation's most densely populated regions.
A majority of Americans likely believe that this is only "fair" without realizing it is absolutely destructive to the core tenants of the republican form of government created by the founders. Those men rightly feared the tyranny of the majority in a true democracy. The very real effect of this law is to disenfranchises the expressed will of the citizens of a given state in favor of the will of a national majority. The regional, cultural and economic fears that drove the creation of this form of our government are as great or greater today than they were in 1788. At least with respect to the presidency, that construct could now be legally ignored, because such a compact would hand the power to choose the president to the densely populated and densely democrat urban coasts. At least five presidents would not have won, including Bush in 2000 and Trump in 2016.
Even more critical than the simple determination of an election, think for a moment how little the interests of a state like Oklahoma, or Mississippi, or Montana will mean to a presidential platform when only the vote count rather than the electoral college is what matters. Those interests, like hunting, the 2d amendment, access to federal lands, ecological tyranny, etc, etc, will be of little interest to any candidate of any party trying to maximise the votes of greater New York and LA.
It is worth remembering that Texas, with its new Democrat governor, has forty electoral votes.