Hillary Clinton's and Donald Trump's campaigns are characterizing the opposing party's candidate as a liar who cannot trusted to tell the truth as they battle for the the upper-hand before the election-defining cage match.

Clinton campaign manager Robby Mook argued on the Today show that Trump is full of 'lies and distortions' that he'll try to use as subterfuge.

'We are concerned that Donald Trump may lie, he may throw misinformation out there, and that Hillary will have to spend all of her time trying to correct the record rather than talking about the things she wants to accomplish,' Mook told CBS in another interview.

The Democrat's campaign wants moderator Lester Holt to fack-check Trump if that happens. 'All that we’re asking is that the record be checked,' Mook stated.

Trump surrogate Rudy Giuliani said on Fox and Friends that Clinton's the one who needs to be kept in check. She's 'probably the biggest liar that ever ran for president of the United States is going to bring up lies at the debate.'

Clinton campaign manager Robby Mook argued on the Today show that Trump is full of 'lies and distortions' that he'll try to use as subterfuge

Trump surrogate Rudy Giuliani said on Fox and Friends that Clinton's the one who needs to be kept in check. She's 'probably the biggest liar that ever ran for president of the United States is going to bring up lies at the debate'

'This is the woman who's lied maybe 15 different times about Benghazi and told three different stories,' Giuliani declared. 'I think if she wants to get to the area of lying, she's lied about things that imperil our national security.'

Clinton's campaign has been begging Holt to insert himself into the conversation if Trump makes demonstrably false claims.

Jennifer Palmieri, Clinton's communications director, actively encouraged Holt on Friday to challenge Trump when 'lies come out of his mouth at this debate.'

The candidate 'will respond when he misrepresents her own record,' Palmieri said, 'but given the historic nature of how much Donald Trump lies, it cannot be only on her.'

If the Nightly News anchor lets them stand, Trump will have 'an unfair advantage,' Palmieri claimed.

Clinton's deputy communications director Kristina Schake repeated the 'unfair advantage' charge on MSNBC on Monday morning.

Mook told CBS 'if Donald Trump lies, which he has repeatedly done in the past,' the campaign is asking 'that that be simply checked.'

Hillary Clinton's and Donald Trump's campaigns are characterizing the opposing party's candidate as a liar who cannot trusted to tell the truth as they battle for the the upper-hand before the election-defining cage match. Mook's seen here selling his side to Savannah Guthrie and Matt Lauer

Trump campaign manager Kellyanne Conway complained this morning that Clinton's camp is trying to 'game the refs' by encouraging moderators of the three general election debates, the first of which is tonight at Hofstra University in New York, to dispute the candidates' statements on stage.

Palmieri and Mook are seeking to turn the media into an 'adjunct of the campaign' by telling journalists how to behave, Conway proclaimed on MSNBC.

'It's irresponsible for them to be telling the media...that here's your job. If you don't fact-check Donald Trump the bar is lower. Some of them even suggesting that the questions will be tougher on her because of sexism.'

'Seriously?' Conway said. 'You've been secretary of state and first lady and then a U.S. senator.'

She told the Today show, 'The Clinton campaign has clearly been gaming the refs, has been talking to the media for a week now saying, "It’s your job to makes sure that Donald Trump is fact checked in real time."

'I’m just surprised that a campaign manager would try to lower expectations that dramatically for his own candidate.'

Donald Trump's campaign manager is worried Hillary Clinton will successfully convince debate watchers that the Republican candidate for president is sexist tonight

Trump's the one who's being treated unfairly by the media, Conway charged on MSNBC.

The campaign hand says she has a stack of their tweets on her desk from reporters embedded with their campaign, 'we've printed them out,' and '92 percent of at least two of our embeds tweets are negative towards Donald Trump.'

Conway also said she's worried Clinton will successfully convince debate watchers that the Republican candidate for president is sexist

When Trump comes after her, 'she's going to try to interrupt him and confuse the people watching in such a way that he was somehow rude to a woman, he somehow lied on the stage,' GOP pollster and Trump campaign chief Kellyanne Conway predicted on Morning Joe.

And if Clinton says to him, ' "That's just not true, you're distorting my record, " ' Conway said, 'People will say, "He was mean to a woman," and the headlines will scream and Twitter will blow up, even if it's not true.'

The 90-minute, prime-time event moderated by Holt is the first of three sparring matches the White House candidates agreed to before the November election.