An unlikely but not nearly impossible election outcome would be a 269-269 electoral push.
So what would books do?
Call the bets a push? Wait until the elctors meet in December, cast their votes, and then wait for the States to choose Romney (which would almost certainly happen in this case)?
Or what if an elector went rougue and say cast a deciding vote for Obama outside his States wishes?
So, in general, do books decide based on the outcome determined by apparent election results when they occur or do they wait for an official decision made by the electors in December. Or perhaps, do they wait until an inaugaration actually takes place in January.
As far as I can tell, these matters are not discussed in the books' rules.