The executive editor of The Washington Post late Monday fired back after Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.) suggested that the newspaper negatively covers his presidential campaign because he criticizes its owner, Jeff Bezos Jeffrey (Jeff) Preston BezosTwitter mandates lawmakers, journalists to beef up passwords heading into election Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Amazon planning small delivery hubs in suburbs MORE.

"Sen. Sanders is a member of a large club of politicians — of every ideology — who complain about their coverage,” Marty Baron said in a statement to CNN. “Contrary to the conspiracy theory the senator seems to favor, Jeff Bezos allows our newsroom to operate with full independence, as our reporters and editors can attest.”

Baron’s response came after Sanders knocked Bezos, who also owns Amazon, during a campaign speech in Wolfeboro, N.H.

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"I talk about [Amazon's taxes] all of the time," Sanders said. "And then I wonder why The Washington Post, which is owned by Jeff Bezos, who owns Amazon, doesn't write particularly good articles about me. I don't know why."

Bezos bought the newspaper in 2013 for $250 million and has since faced criticism from a variety of politicians including President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE, who has dubbed the paper “The Amazon Washington Post.”

Baron told The New York Times earlier this year that Bezos has never gotten involved in the newspaper’s reporting or final stories.

“People surmise that it must be difficult to cover Jeff and Amazon. But we’ve gone five and a half years with his ownership, and he hasn’t once intervened in any way,” Baron said.

Sanders and his campaign have begun arguing recently that a variety of news outlets, including the Post and the Times, are biased in their coverage of his 2020 White House bid.

"We have pointed out over and over again that Amazon made $10 billion in profits last year. You know how much they paid in taxes? You got it, zero! Any wonder why The Washington Post is not one of my great supporters, I wonder why?" Sanders said in North Conway, N.H., on Monday night, according to CNN.

"New York Times not much better," he added.

Top advisers to the Vermont senator’s campaign on a Monday phone call with reporters argued that Sanders has been making ground in the crowded Democratic primary field, despite headlines.

“We’re sort of in the phase called the ‘Bernie write-off,’” said senior adviser Jeff Weaver. “There seems to be a direct correlation between the media coverage of the polls and Bernie Sanders’s standing in those polls.”

The comments came days after a Monmouth University poll of likely Democratic Iowa caucusgoers showed Sanders slipping into fourth place. That same survey found Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) rising to second place, behind former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE. Sen. Kamala Harris Kamala HarrisTexas Democratic official urges Biden to visit state: 'I thought he had his own plane' The Hill's Campaign Report: Biden on Trump: 'He'll leave' l GOP laywers brush off Trump's election remarks l Obama's endorsements A game theorist's advice to President Trump on filling the Supreme Court seat MORE (D-Calif.) nabbed third place in the survey.