It is debate night in America, and we are now just a few hours away from what will be an historic presidential debate

and the first face-to-face meeting between Vice President Kamala Harris and former President

Donald Trump. Good evening to all. I'm Erin Burnett.

And I'm Wolf Blitzer in Philadelphia. Welcome to our viewers here in the United States

and around the world. This is a special edition of the Situation Room.

Aaron, the unprecedented showdown tonight will be taking place right here in Philadelphia.

These are brand new pictures we're getting right now at the debate stage.

Former President Trump now making his way to the city of brotherly love.

CNN is learning. He will be joined by two family members, Eric Trump and his

wife, Lara Trump. And, well, the stakes, obviously, couldn't be higher. This is a razor-tight race

from every single poll. Early voting is about to start 56 days until actual election day.

And both candidates are trying to use this moment to, frankly, try to get under the other skin to

unsettle them.

We've seen what can happen in a one-hour debate.

Harris bringing with her two of Trump's former aides in attendance and her campaign, also

just releasing an ad featuring former President Obama mocking Trump's obsession with crowd sizes.

Meanwhile, Wolf Trump's campaign is telling reporters the bar is, quote, very high for Harris.

They released a list of 47 former prosecutors who are now backing the former president instead of Harris,

who, of course, Wolf is a former prosecutor.

And, Aaron, we certainly have a lot to cover over the next several hours.

Jeff Zellini and Kristen Holmes are both here in Philadelphia reporting on what's going on.

Let me start with Jeff, who joins me live from the debate site in Philadelphia.

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