The country is 337 days away from the Iowa caucuses and 611 days from the general election for president. But that’s not stopping Democrats from debating the politics of entering the race really, really early or just, well, plain old-fashioned early.

A dozen candidates, half of whom are women, rushed into the contest in the first two months of 2019, creating the most diverse primary field in history. Now, the party is on the cusp of a second round of announcements: A wave of white men, most of whom have targeted March as their do-or-die moment.

“Amy and I have made a decision about how we can best serve our country,” former Representative Beto O’Rourke of Texas aid in a brief statement on Wednesday. “We are excited to share it with everyone soon.”

Michael R. Bloomberg gave himself a timeline of “three more weeks” to decide — two and a half weeks ago.