3) There will be more "manufacturing" of votes. At this point, we can be pretty sure that there is not much need to stuff the boxes in Delaware or Mississippi, because we can be pretty sure who they are going to, and their electoral votes aren't gonna create that much of a ripple in the system. However, if one vote can decide the election, than you are gonna have massive voter fraud everywhere and it will be so wide spread all over the country, that there aren't gonna be enough people to monitor it.
We're already a useless state...in a nationwide popular vote, a candidate might actually come here...