There is actually quite a bit of difference between Romney and Obama. It's the difference between some light as opposed to total darkness.
Amazing that you see it that way, if that's what you truly believe.
Under Obama: government grows, freedom shrinks, the economy crashes;
Under Romney: government grows, freedom shrinks, the economy crashes.
Both for our foreign wars, both for the PATRIOT Act, MCA, NDAA, etc. Both for gun control, and depending on if it's campaign season or after the election, both for prenatal infanticide.
They are the same in every way that matters. They're both big government liberals. Oh, maybe one wants taxes to be a little lower, but we arrive at the same place.