Exactly.. what a smart candidate does is spend their next dollar on whatever is the best bang for the buck in getting elected. So an NPV would mean figuring out where the undecided voters are, nation-wide, and figuring out the cheapest ones to go after first, and working your way up the low-hanging fruit.
If it was much cheaper to convince undecided voters in urban areas, they’d go there first... but the competition among candidates spending would start to drive up the cost per voter to an equilibrium where it started to make sense to go to rural areas, and if that started to drive prices up, maybe next is suburban. But it’s everywhere, all over the country, appealing to everybody as effectively as you can, to win. And since the president affects everybody, it only seems right they should be elected by 1 person, 1 vote, across all citizens.
If it was much cheaper to convince undecided voters in urban areas, they’d go there first... but the competition among candidates spending would start to drive up the cost per voter to an equilibrium where it started to make sense to go to rural areas, and if that started to drive prices up, maybe next is suburban. But it’s everywhere, all over the country, appealing to everybody as effectively as you can, to win. And since the president affects everybody, it only seems right they should be elected by 1 person, 1 vote, across all citizens.