For the first time in over 50 years, a sitting president eligible for a second term has opted to forgo reelection. After weeks of speculation, the president announced on Sunday that he would withdraw from the race and endorse Vice President Kamala Harris. According to reports, the decision caught not only Democratic politicians off guard, but also members of Biden's campaign and White House staff. And with less than a month until the Democratic National Convention, many details must be worked out as the dust settles. Playbook co-authors Rachael Bade, Eugene Daniels, and Ryan Lizza break it all down.