On one hand, the Democrats have a history of managing the economy correctly with moderate fiscal responsibility, maintaining social services, and pushing back on corporate excesses and warmongering. The last time we had a balanced budget was Clinton’s.
On the other hand, Republicans claim they are better for the economy, although they are the ones that constantly crash it, do the most to worsen the debt and deficits, and take away living standards for the average American.
So who’s better for the economy? It’s so hard to tell.
I don’t think there has ever been a Western democracy that was better off due to conservative politics, only worse.
As an example, take Germany, which had over 30 years of almost uninterrupted conservative leadership (including 16 years of Merkel) and is now serious lagging behind in digitalization, modern infrastructure, military, social services, education and more.