According to David Leonhart the tally is  ~90%  Bush and ~10% Obama. After analyzing the Congressional Budget Office projections of the budget surplus or deficit Mr. Leonhart sees two basic truths:  “President Obama’s agenda, ambitious as it may be, is responsible for only a sliver of the deficits, despite what many of his Republican critics are saying [however] Mr. Obama does not have a realistic plan for eliminating the deficit, despite what his advisers have suggested.