After tangoing with Shapiro, Kamala Harris is taking Mr. Minnesota Nice Guy to the big dance. Puck’s Peter Hamby and John Heilemann discuss why veep picks almost never make a difference—until they do.

With the Democratic convention two weeks out and the Labor Day kickoff of the fall campaign looming, Kamala Harris and her people have a jillion big decisions and tasks to tackle in no time flat. But three items on their punch list matter most of all: map, message, and running mate.