The oldest president in the history of the United States wants a second term. Vox’s Andrew Prokop and Dylan Matthews explain why Joe Biden doesn’t have any competition.This episode was produced by Haleema Shah and Siona Peterous, edited by Amina Al-Sadi, fact-checked by Matt Collette and Laura Bullard, engineered by Patrick Boyd, and hosted by Sean Rameswaram.Transcript at vox.com/todayexplainedSupport Today, Explained by making a financial contribution to Vox! bit.ly/givepodcastsLearn more about your ad choices. Visit podcastchoices.com/adchoices