Polls are suggesting that Vice President Biden is picking up support in many battleground states –and even in some that went decisively for Trump in 2016.

Though we are still a few months off from the election, Trump himself seems to be setting the stage for rejecting the results if he loses.

Lawrence Douglas is a professor of law, jurisprudence and social thought at Amherst College. He explores what would happen if, indeed, Trump refuses to concede in a new book. It’s titled “Will He Go? Trump and the Looming Election Meltdown in 2020.”