The National Popular Vote interstate compact would guarantee the Presidency to the candidate who receives the most popular votes in all 50 states and the District of Columbia. It will go into effect after it is enacted by states possessing a majority of the electoral votes—that is, enough to elect a President (270 of 538). Under the compact, when the Electoral College meets in mid-December, the candidate who received the most popular votes in all 50 states (and DC) will receive all of the electoral votes of the enacting states.

The National Popular Vote bill has been enacted by 11 jurisdictions possessing 165 electoral votes—61% of the 270 electoral votes necessary to activate it, including four small jurisdictions (RI, VT, HI, DC), three medium- size states (MD, MA, WA), and four big states (NJ, IL, NY, CA). The bill has passed a total of 35 legislative chambers in 23 states—most recently by a 40–16 vote in the Arizona House, a 28–18 vote in the Oklahoma Senate, a 57–4 vote in New York Senate, a 37–21 vote in Oregon House, and a 26-16 vote in the New Mexico Senate. A total of 3,055 state legislators have either sponsored or cast a recorded vote for the bill.

https://www.nationalpopularvote.com/written-explanation