I fundamentally disagree with your analysis. It displays a lack of understanding of political power and Obama is neither a Marxist or a Socialist. But that's not what I want to address today. What we need to address is this:
Obama and Romney differ very little when it comes to the actual issues
You're kidding, right?
One pushed through a big health care reform which will cover millions of uninsured people while the other is moving as far away from his (mostly identical) program as possible.
One believes that progressive taxation is essential to prosperity. The other has done everything he can to make the tax system regressive.
One believes we need to regulate the financial sector to ensure stability. The other has pledged to tear down what little regulation we have.
One has invested in renewable energy and the other says he will fund "traditional" energy sources and dismantle decades of environmental law.
One may agree or disagree with the candidates on these points but one cannot honestly say there is no difference between them.