I will resit the temptation to accuse the republicans of relying almost solely on flawed logic.
From Mitt Romney:
"Now we have more chronic long-term unemployment than this country has ever seen before, twenty million people out of work, stopped looking for work, or in part-time jobs that need full-time jobs, we've got housing prices continuing to decline, and we have foreclosures at record levels. This president has failed."
Post hoc ergo propter hoc I say. Meaning - after this, therefore because of this.