by David Graham,

o one alive has seen a race like the 2024 presidential election. For months, if not years, many people have expected a reprise of the 2020 election, a matchup between the sitting president and a former president. But that hasn’t prevented a crowded primary. On the GOP side, more than a dozen candidates are ostensibly vying for the nomination. Donald Trump’s lead appears prohibitive, but no candidate has ever won his party’s nomination while facing four (so far) separate felony indictments.

On the other side, Democratic hesitations about a second Joe Biden term have mostly dissolved into resignation that he’s running, but Representative Dean Phillips is making a last-ditch effort to offer a younger alternative. Biden’s age and the generally lukewarm feeling among some voters have ensured that a decent-size shadow field still lingers, just waiting in case Biden bows out for some reason.

Behind all of this, the possibility of a serious third-party bid, led by either No Labels or some other group, continues to linger. It adds up to a race that is simple on the surface but strangely confusing just below it. This guide to the candidates—who’s in, who’s out, and who’s somewhere in between—serves as a road map to navigate that. It will be updated as the campaign develops, so check in regularly.

More From The Atlantic: