Trump campaign spokesman Hogan Gidley on Friday called polling from Fox News showing Donald Trump behind Joe Biden "fake," prompting a quick rebuke from Fox host Brian Kilmeade.

Gidley alleged that Fox's pollsters "oversample Democrats," echoing allegations made by Trump, his administration, and his reelection campaign.

"I know the people who do the polls. They don't do a fake, they do a really good job," replied Kilmeade.The exchange was unusual, as the conservative Fox News continues to be one of Trump's most stalwart allies.

Recent polling by Fox has shown Joe Biden with an 8-point national lead over Trump among registered voters. Fox's polling also shows Biden ahead of Trump in key swing states such as Michigan, Minnesota, and Pennsylvania. Fox's polls are in line with other national polls showing a consistent Biden lead.

From the July 24 edition of Fox & Friends:

HOGAN GIDLEY: You touched on some polls. Most of those are fake, I'll be honest, they oversample Democrats.

But let's also talk about another instance here. We've had more than 1.1 billion views across our social media platforms for Donald Trump. He's not even really on those social media platforms all that much. Joe Biden, however, comes out the other day for a Q-and-A, he promotes it, he's on camera, and he has 19 people watching it at one time. I think 17 of those were network news anchors and reporters just trying to figure out how to donate. The other two were staffers.

The fact is, the enthusiasm, the excitement is all on our side, and we know this. Our supporters will stand through rain, sleet, snow, hail, and crawl across broken glass to vote for Donald Trump. Joe Biden's supporters won't even click on a link to watch him do a Q-and-A. It's absolutely embarrassing. We have the momentum, we know we're going to do well in November.

BRIAN KILMEADE, Fox News: I just, I say, I know the people who do the polls. They don't do a fake, they do a really good job. They might not be accurate in the end, I don't know, but they do a great job —

GIDLEY: Well doesn't accuracy determine – I know the people are great, but doesn't the accuracy determine how great it is?

KILMEADE: I'm not saying they're Nostradamus, but I'm just saying their math, and they're professionals, so I just – don't call the Fox News pollsters fake.

GIDLEY: Of course. Well, the methodology's flawed, at the very least, how's that?