Stock market performance is not a proxy for economic performance, and you shouldn't evaluate the economy on this basis. With that caveat aside, there's a lot of market uncertainty right now and I made this little indexed comparison for myself so I can look and see where we are. It's less painful than checking my 401k! Updates nightly.
By default, the lines are graphed from each president's inauguration on January 20th. You can click the checkbox below to graph each line from the president's election date instead.
You can find my code for this project on my github.