Studies have analyzed the economic performance of both Democratic and Republican presidential administrations in the United States, and generally find that the economy tends to perform better under Democratic administrations.
Here's a summary of the key findings:
GDP Growth: The economy has, on average, grown faster under Democratic presidents. For example, studies show that annual real GDP growth has been higher during Democratic administrations compared to Republican ones.
Job Growth: Democratic presidents have overseen, on average, higher job creation rates. This includes higher rates of total job growth and especially private sector job growth.
Unemployment: The unemployment rate tends to be lower at the end of Democratic presidencies and higher at the end of Republican presidencies.
Recessions: Nearly all recessions in the modern era (since World War II) have begun under Republican presidents.
Manufacturing: Manufacturing job growth and investment have been greater under Democratic presidents.
Small Business Creation: Small business creation has been higher under recent Democratic administrations.
Income Growth: Income growth, particularly for lower-income families, tends to be faster under Democratic presidents.
National Debt: While both parties have overseen increases in the national debt, studies suggest that more was added under recent Republican presidencies, largely due to tax cuts that favored the wealthy and corporations.