• Eight of the last nine recessions have been under Republican presidents
• Democratic presidents create twice as many jobs per year as Republican presidents.
• Republican presidents' deficits are three times higher than Democrats' and twice as high as a percent of GDP.
• The economy grows 41% faster under Democratic presidents.
• Businesses invest three times as much under Democratic presidents.

The answer is in the in-depth analysis of economic facts that track how the economy performed under Republican and Democratic presidents. Data compiled here come from official government sources, such as Statistical Abstracts of the United States, Economic Reports of the president, the Office of Management and Budget (OMB), and the Congressional Budget Office (CBO). These tables all show the precise sources. That data tracks the performance of Democratic and Republican presidents from World War II to the current Republican administration. Similar comparisons were made from 1961 and 1981 to date. In the more recent periods, the Republicans do worse and the Democratic presidents generally do better. The trends seen then are confirmed and emphasized during the Clinton and Bush administrations. These tables were also calculated on the assumption that the economy of the United States during a president�s first year in office is attributed to the previous administration, since the US federal budget is drawn up a year before it takes affect. The differences observed were not large enough to warrant inclusion.