The Democratic presidential debate is 6 p.m. to 8 p.m. Pacific Standard time. It is being held in Las Vegas and hosted by NBC, MSNBC and The Nevada Independent. The debate is taking place three days before the Nevada caucuses on Saturday.

This is the first debate to include former Mayor Michael Bloomberg of New York. He will join five other Democratic candidates: Sen. Bernie Sanders of Vermont; former Vice President Joe Biden; Sen. Elizabeth Warren of Massachusetts; former Mayor Pete Buttigieg of South Bend, Indiana; and Sen. Amy Klobuchar of Minnesota.

In the two nominating contests so far, Buttigieg and Sanders were essentially tied in Iowa, and Sanders narrowly beat Buttigieg in New Hampshire. Going into tonight’s debate, polling indicates Sanders has an edge over his rivals in Nevada.

Candidates will have 1 minute and 15 seconds for answers, and 45 seconds for follow-up responses at the moderators’ discretion. The moderators are Lester Holt and Chuck Todd of NBC, Hallie Jackson of NBC and MSNBC, Vanessa Hauc of Noticias Telemundo and Jon Ralston of The Nevada Independent.

Will Sanders play offense or defense or neither?

There are two big questions for Sanders when he takes the debate stage: Will he be a target for attack? And will he attack Bloomberg?

Rivals challenged Sanders at times in the last debate, before the New Hampshire primary, but he emerged relatively unscathed. Now he is a front-runner, and front-runners have typically come under steady criticism in debates. After Sanders’ tie in Iowa and victory in New Hampshire, will any of his opponents finally go after him in a meaningful way?

Advertising

At the same time, the arrival of Bloomberg onstage gives Sanders a prime opportunity to attack a billionaire candidate who represents much of what the Vermont senator despises. Will he play offense?

Sanders already appears primed for a strong performance in the Nevada caucuses on Saturday. For Sanders-watchers, the most interesting aspect of tonight’s debate is probably whether a man who rarely changes his message will do just that, and what effect it may have.

Warren unbound?

Warren has largely avoided attacking opponents, in debates and on the trail. As she seeks to jolt her stalled candidacy after a disappointing finish in New Hampshire, however, several signs point to this debate in Nevada as the moment that Warren will go on a sustained offensive.

The clearest one was on Tuesday when Warren called Bloomberg an “egomaniac” on Twitter and challenged her opponents to hold his feet to the fire. In another Twitter post, Warren said Bloomberg “approved and oversaw a program that surveilled and tracked Muslim communities in mosques, restaurants, and even college campuses — leaving permanent damage.”

If Warren carries out these attacks onstage, it will most likely provide her supporters with the moment they have been waiting for in recent months.

After the last debate in New Hampshire, when Warren did not interject into the conversation like many of her opponents did, some supporters expressed exasperation with an approach that could be relentlessly unflinching. Even Warren said after the debate that she wished she had jumped in more.

Advertising

“I just didn’t say enough, didn’t fight hard enough, didn’t tell you how bad I want this and how good we could make it if we just come together,” she said.

She finished in fourth place days later in the New Hampshire primary.

Buttigieg’s toughest task yet?

For months, Buttigieg’s campaign was built around the idea that strong finishes in Iowa and New Hampshire would make him the inheritor of the Democratic Party’s Obama coalition.

But that calculation didn’t count on a billionaire candidate, Bloomberg, targeting Super Tuesday states in March and spending many times more on television advertising than Buttigieg could ever hope to raise from donors excited about his post-Iowa momentum.

While Sanders and Warren have sounded far more aggrieved about Bloomberg’s recent polling rise and his past statements about housing discrimination and stop-and-frisk police tactics, Bloomberg presents a far graver threat to Buttigieg than he does to their more liberal rivals.

Bloomberg can also deflect Buttigieg’s core argument: that it will take a mayor from outside Washington to galvanize an American majority to defeat President Donald Trump. Bloomberg would fit that profile, too.

Advertising

Buttigieg, who has struggled to appeal to black voters, may have difficulty attacking Bloomberg on his past statements about housing and policing, given his own difficulties on those fronts in South Bend, Indiana.

Time and again, Buttigieg has proved himself to be a highly competent debater, able to land precise blows on his opponents while deflecting and counterattacking their shots at him. Trying to disqualify Bloomberg in the eyes of voters in Super Tuesday states, where some early voting is already underway, may be his most difficult task yet.

Can Biden break out?

A strong debate performance close to an Election Day can make a meaningful difference for a campaign’s momentum — just ask Klobuchar, who received a post-debate surge in support right before the New Hampshire primary, and landed a surprise third-place finish there.

Biden, the onetime national front-runner who came in fourth place in Iowa and fifth in New Hampshire, could really use a substantial surge right now.

Is there anything he can do to stand out onstage Wednesday night?

He has previewed a range of arguments against his opponents, from alluding to Sanders’ record on gun control, to swiping at Bloomberg’s background as a former Republican. But Biden is often hesitant to draw sharp contrasts with rivals onstage when they are shoulder-to-shoulder. And throughout the campaign, he has had a number of disastrous debate moments — never mind achieving the kind of race-changing, breakout performance he needs now, in a state where his campaign believes he must finish in at least second place.

Biden is at his best, and his most comfortable, when engaging one-on-one with voters. Can he translate that appeal onstage in a memorable — and effective — way?