I really tire of hearing that falsehood.
Please research the numbers yourself and become more intelligent about the subject.
Even if it true, so what? People are free not to vote. People are free to think both candidates are not worth their vote. Believe me, they weren’t.
It is you that needs to do some research. Romney received fewer votes than McCain four years earlier. The difference in those numbers mostly represents the Kamikaze Conservatives who stayed home and allowed Obama to win, thereby teaching the evil Republicans a lesson about RINO's, Mormons, or something.