不带政治倾向就事论事，近50年dem在台上时股市回报就是比gop在台上时高(14.8% vs 9.3%)。

Historically, U.S. stock market returns have been higher under Democratic presidents, with the S&P 500 averaging roughly 14.8% annually compared to 9.3% under Republicans from 1926–2023. Despite this, market performance is not determined by party alone; it is heavily influenced by economic cycles, market timing, and frequently better performance under divided government.