American politics now appears to be following the old rule about buses: You wait and wait for a seismic shock, and then three or four suddenly arrive at once.

So it proved this Sunday, when, just as the country was catching its breath from Donald Trump’s brush with death and his selection of J.D. Vance as his vice president, Joe Biden bowed to a relentless pressure campaign and announced that he was dropping out of the presidential race. In the blink of an eye, Biden consigned himself to history. Now there is only one name on everyone’s lips: Kamala Harris.

All of the old questions about Biden are moot. We have new questions to consider: Who will Harris’s VP pick be? What would her administration look like? And, most importantly: Can she unite a fracturing Democratic base, take on Trump, pull off one of the most stunning political comebacks we’ve ever seen, and become the first Black, Asian, female president in history—all in just over 100 days?

To discuss all that on this week’s episode of See How They Run, I’m thrilled to be joined by two of our national affairs correspondents: Jeet Heer, who has been closely following the frenzy of the past few weeks, and Joan Walsh, one of the country’s top Harris-ologists, who has been reporting on the vice president for decades and whose exclusive, must-read profile of Harris is the cover story of our August issue.