It certainly is a tossup between that senile old dud and that commie mulatto...
The difference is that allegedly conservative R’s in Congress use an R administration as cover for increasing size and scope of govt. At least there is some push back with a president like O. If we had elected McCain or Romney we would have had more gun control, amnesty, war...and an even larger fedgov. For me the only principled vote was third party in each of those cases.