With the midterms looming, the economic growth numbers become ever more important. And the latest ones are very good. President Trump celebrated the “amazing” numbers and predicted continued growth. However, “most independent economists say this quarter’s growth was juiced by stimulus from the trillion-dollar tax cut and a one-time rush by foreign companies to stock up on U.S. goods before Trump’s trade war escalated and tariffs kicked in on many products.” But the growth was still good. To extend the metaphor in my headline, the outcome of the midterm elections could hinge on whether or not the president can keep it up.