Showdown in Sin City

Presidential candidates Hillary Clinton and Donald Trump face each other in the final debate of this campaign season.

(NBC News) – Tonight’s the last debate between Hillary Clinton and Donald Trump.

It’s happening in Las Vegas. The latest Nevada polls show Clinton’s pulled ahead there.

Trump says that’s because the media’s on her side… And the election is rigged against him.

Working the phones at Hillary Clinton’s Nevada headquarters, confident in their candidate, but some.. Anxious about tonight’s debate. “One little thing could go wrong and that’s all people remember.” Clinton Volunteer Connie Barrett.

Donald Trump claims the media focuses more on sexual assault allegations against him…

Than emails suggesting the state department tried to declassify a top-secret email after Clinton sent it. “The press has created a rigged system and poisoned the minds of the voters.” Donald Trump/ (R) Presidential Nominee

“I’d advise Mr. Trump to stop whining and go try to make his case to get votes.” President Barack Obama

The president’s half-brother Malik is attending tonight’s debate. He’s a Trump supporter.

So is the mother of Benghazi attack victim Sean Smith. She’ll be here.

Clinton’s guests include billionaires Mark Cuban – a Trump critic

And republican donor Meg Whitman… Now backing Clinton.

Clinton’s arrived in Las Vegas. Her game plan: stay focused and look presidential.

Trump’s game plan: go after Clinton’s record and look smart. He’s been studying foreign policy. “He’s down in the polls. He’s going to go out swinging.” UNLV Political Science Professor Dan Lee

He’ll be on the left. She’ll be on the right; with millions of undecided voters in the middle.