The economy has grown significantly faster under Democratic presidents than Republican ones.
It’s true about almost any major indicator: gross domestic product, employment, incomes, productivity, even stock prices. It’s true if you examine only the precise period when a president is in office, or instead assume that a president’s policies affect the economy only after a lag and don’t start his economic clock until months after he takes office. The gap “holds almost regardless of how you define success,” two economics professors at Princeton, Alan Blinder and Mark Watson, write. They describe it as “startlingly large.”
One broad possibility with a good amount of supporting evidence: Democrats have been more willing to heed economic and historical lessons about what policies actually strengthen the economy, while Republicans have often clung to theories that they want to believe — like the supposedly magical power of tax cuts and deregulation. Democrats, in short, have been more pragmatic.
https://www.nytimes.com/2021/02/02/opinion/sunday/democrats-economy.html