That has nothing to do with this. That's the interstate popular vote compact and all it does is make the winner of the popular vote the winner of the election. It does absolutely nothing to end two party dominance, and continues all of the exact same flaws of the existing system but without the electoral college, and even that only in the unlikely event that the compact survives the inevitable challenge in the supreme court. You's still only get one vote for one candidate and it comes necessarily at the expense of any others.