Hello from inside the Historic Fox Theater here in Detroit. I'm Wolf-Blitzer.

Just hours from now, the first of two CNN Democratic presidential debates will get underway.

Ten candidates will take the stage tonight.

Elizabeth Warren and Bernie Sanders, the polling progressives they will be right at the center of it all and the whole team for this special edition of the lead.

Jake Tapper of course preparing to moderate tonight's debate alongside

Dana Bash and D. Lemon.

Wolf, so many candidates on stage, pressure has to be on because let's be honest,

if you don't break through tonight, if you don't get into that main dialogue,

you may not get another chance.

So, as we've seen in past debates, if you want to make a name or a move,

often it's going to be an attack. What will that be? We'll know in just a couple of hours.

So for right now, let's start to get into our coverage of what's going on. The clock is ticking. Let's get right to

CNN's Jeff Zellany inside the debate hall. So Jeff for the leaders and

laggards alike tonight very big

Chris no question about it. I mean this is a the last debate for some of these candidates we don't know which candidates those will be,

but all eyes will be on the center of the stage, as you said, where Bernie Sanders and

Elizabeth Warren are going to be, and they will be flanked by other candidates who

have moderate positions.

That is going to be the heart of this debate,

the ideological divide inside this Democratic Party,

which of course feeds into the ultimate question.

What should Democrats do? Who should they

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