Here's another one that I just calculated.
votes for Obama = 62,605,967
votes for Mccain = 55,512,629
votes for others = 1,526,269
If you add the others to Mccain = 57,038,898
Mccain still would lose by = 5,567,069
estimated number of people eligible to vote (18+) = 224,548,863
total amout of votes cast = 119,644,865
Number of people that didn't vote = 104,903,998 
50% factor for people that are sick, assigned to
a God forsaken outpost, people who moved and could not re-register in time
hobos, druggies and dealers, etc. = 52,451,999