Two weeks ago, the biggest story in the country was the race for the Democratic presidential nomination. Now, with the dramatic onset of the coronavirus crisis, the primary has largely gone off the radar. Today, we talk to Alexander Burns, a political reporter at The New York Times, about what happened when those two stories collided. For more information on today’s episode, visit nytimes.com/thedaily.  Background reading: In a presidential debate without an in-person audience earlier this month, former Vice President Joseph R. Biden Jr. and Senator Bernie Sanders clashed over how to handle the coronavirus crisis. With so much news, you may have missed the debate — here are six takeaways to catch you up.Mr. Sanders is now reassessing his campaign as Mr. Biden plans for the nomination, announcing he will pick a woman as his running mate should he be chosen as the candidate.