Trump won't have the benefit of an inherited economy under him. It will be his one.
We'll see what happens. He borrowed more than $1tn so that taxpayers wouldn't need to pay for their own expenses. And gave the money to the wealthy.
That will turn out to be an inflationary move, meaning higher interest rates which will choke off economic growth.
So by 2020, expect a recession.
Trump's chickens are coming home to roost. He lost the house even before the economic darkness has struck. In 2020, I think the GOP will lose everywhere.