I was going to post this in the "What Happens on Election Day" thread but this is a slightly different questions because depending on how things play out, when the polls close, and reporting the answer could very widely on when we know who won. If one Obama wins FL it could be over very early but if Romney wins Ohio and either PA or WI it could be over early the other way. OTOH if Romney wins Ohio but doesn't capture PA or WI then we could be waiting to see how CO breaks. Also it is likely that with this close of an election we are going to be waiting quite a while for reporting of all the votes in many states. Looming out there though is a big question about what happens with challenges, recounts and possible lawsuits and if this is very close we could see no clear winner for months. Finally the most unlikely but still possible situation is an electoral tie. Then we wouldn't know the winner until at least early January with likely a lot of litigation.