You assume that there will be another free election. That may not necessarily be the case after Vladimir Obama is granted emergency powers after the new Reichstag Fire. Oh, don't worry, the powers will only be "temporary" - like Hitler's powers were temporary (they only lasted for about 12 years, you know).
I understand your concerns and an Obama presidency scares me as well. However, an armed American citizenry is what insures our freedom from tyranny.