In this latest installment of the Donald Trump show, otherwise known as the 2016 presidential race, the GOP frontrunner is on the offense in response to a less than flattering editorial published on the front page of the paper.

The piece, penned by publisher Joe McQuaid, disparaged Trump for comments he made about Senator John McCain, Carly Fiorina’s face, and a physically disabled reporter. He called the anti-establishment candidate “a crude blowhard with no clear political philosophy and no deeper understanding of the important and serious role of the President of the United States.”

Trump then did as Trump always does — he hit back. In an interview with WMUR, he called McQuaid “a real lowlife.” He said that McQuaid wrote the editorial to get back at him for not attending a Voter’s Forum held by the Union Leader over the summer. Later on in the same interview, he accused Chris Christie, whom the paper has endorsed, of pulling strings to have the piece published.

Trump claimed that McQuaid called him “practically begging” to attend the forum, adding, “He’s even told me, the paper is doing absolutely terribly.” McQuaid refuted both of these claims in a statement to Fortune, and says he actually told him that the Union Leader is “in better shape” than many other independently-owned papers.

“Donald Trump has no business running for president,” McQuaid told WMUR. Even Jeb Bush weighed in saying, “I for one am glad he has been called out by the Union Leader.”