With virtually the entire adult U.S. population seeking the Democratic presidential nomination — or so it seems — the party faces some knotty questions.

Is anyone left to vote for somebody besides him- or herself? Can all those people squeeze onto a single debate stage? How does that Buttigieg guy pronounce his name, anyway?

The debate question is a serious one, even if the number of Democrats running is only a mere two dozen or so.

There are several reasons for the exceedingly large field: Changes to the nominating process — which all but eliminated the gate-keeping role of the major political parties — and the advent of social media have made it much easier to wage at least a semi-serious run for president.

There is little downside to entering and losing the contest (unless you think a lucrative cable-TV gig is slumming it) and plenty of incentive to run in 2020, with polls suggesting President Donald Trump is highly vulnerable.

That brings us to that crowded debate stage.

The series of a dozen forums planned by the Democratic National Committee, beginning Wednesday night in Miami, will play an important role in sorting out the presidential field. For some contestants, the debates offer the best and perhaps only shot at breaking from the pack and stamping themselves as serious White House contenders.

That’s because after this week’s opening round in Florida and a pair of debates at the end of July, the rules for participation get even tougher and more exclusionary.

 

Q.  How many Democrats will be in Miami to debate?

A.  Twenty.

 

Q.  All at once? Won’t that violate the fire code?

A.  No. The debate will be split over two nights, back to back.

Ten candidates will debate for two hours each night Wednesday and Thursday — although “debate” is something of a misnomer, in the Lincoln-Douglas sense of the word, given the time constraints and limited ability for great depth or lengthy engagement.

Think of it more like a series of side-by-side press availabilities, with candidates fielding questions from journalists from NBC, which is hosting the first debate, and Telemundo.

 

Q.  How did the party decide which 20 candidates to include?

A.  There were two ways onto the debate stage. One was to hit 1% support in three state or national polls approved by the DNC as among the most trusted and reliable. The other was to raise money from 65,000 unique donors, with a minimum of 200 in 20 different states.

 

Q.  So the lesser-known candidates will be relegated to a “kiddie table”?

A.  No. That’s effectively what happened four years ago, when 17 Republicans sought the GOP nomination, straining both credulity and the physical capacity of the debate stage.

The solution was to split the field, grouping the underdogs in a matchup that served as a warm-up to the main event among the top contenders.

Given the inherent unfairness of stratifying the candidates — elevating some over others before any had uttered a word — Democrats decided to stage their debates differently.

This time, leading candidates — whose standing based on polling or perception put them in the top tier — will be spread over two nights. The idea is to have everyone start on a somewhat even footing and hope both nights produce compelling TV.

 

Q.  How was it decided which candidates appear on which night?

A.  The candidates were split into two groups: those polling on average 2% or higher, and those with less support. The names were then picked randomly from each group to ensure a mix on both nights.

As it turns out, several top contenders — former Vice President Joe Biden; Sens. Bernie Sanders of Vermont and Kamala Harris of California; and South Bend, Indiana, Mayor Pete Buttigieg — will debate Thursday night, with Biden and Sanders at center stage.

Massachusetts Sen. Elizabeth Warren, another in the top tier, will be center stage Wednesday night, alongside former Texas Rep. Beto O’Rourke and New Jersey Sen. Cory Booker. Rep. Tim Ryan of Ohio will be in this group.

 

Q.  Will I recognize everyone on stage?

A.  Not unless you’re some kind of political obsessive, or busy boning up for the 2020 presidential edition of Trivial Pursuit.

Producers of the debate are putting the lower-tier candidates on the outer edge of the stage. Among them are Marianne Williamson, the author of “Enchanted Love: The Mystical Power of Intimate Relationships,” and Andrew Yang, a wealthy New York businessman who warns that robots could soon make many jobs obsolete.

A stable of more standard politicians will also be clustered toward the wings, among them John Delaney, a former Maryland congressman who launched his campaign in July 2017 but has yet to achieve a breakout moment.

 

Q.  By the way, how do you pronounce Buttigieg?

It’s BUDDHA-judge or, alternatively, BOOT-edge-edge. There’s some debate about which is preferable.