In a new book, journalist Edward-Isaac Dovere digs into the Democrats’ ultimately successful campaign to unseat Donald Trump in the 2020 presidential race. It all started with a crowded and sometimes chaotic primary contest that included the struggles of strategists trying to wrap their minds around a nontraditional opponent.

Dovere joined Adam Reilly to discuss the book, Battle for the Soul: Inside the Democrats’ Campaigns To Defeat Trump.

Watch: How many Democratic campaigns produced a 2020 win?