Most polling data suggests that former President Donald Trump is all but assured of winning the Republican Party's nomination.

This has led to speculation over who Trump will select as his running mate, with some observers saying that his choice could lead to pandemonium in the GOP.

Matt Gaetz says having Nikki Haley as VP would be a "nightmare"

Jonathan Martin serves as Politico's senior political columnist as well as its politics bureau chief, and he made that case in an article published on Thursday.

One concern held by many conservatives is that Trump will pick former United Nations Ambassador Nikki Haley, a prospect Martin says has "Trumpworld" working "to block her from the consolation prize of the vice presidency."

Chief among them is Florida Republican Rep. Matt Gaetz. He told Martin that "Nikki Haley as VP would be an establishment neocon fantasy and a MAGA nightmare."

"On Day One she would convert the Naval Observatory into an anti-Trump, resistance headquarters, undermining him at every step," he predicted.

Marjorie Taylor Greene threats a "revolt" if Haley is picked

Gaetz is joined in his opposition by Donald Trump Jr., who said during an interview with Newsmax last month that he will "go to great lengths to make sure" that Haley doesn't become his father's vice president.

Georgia Republican Rep. Marjorie Taylor Greene sounded a similar note, promising a "revolt" if Haley appears on the Republican ticket.

MAGA would revolt if Nikki Haley were to even be given an internship in Trump’s next administration.

She represents the neocon establishment America last wing of the Republican Party that we are absolutely done with.

Also, she lied and said she would not run against Trump.

— Marjorie Taylor Greene 🇺🇸 (@mtgreenee) December 12, 2023

Martin noted that another critic is South Dakota Republican Gov. Kristi Noem. He quoted Noem as saying of Haley, "Whichever way the political winds blow is where she goes, and we cannot trust our country to somebody like that either."

Noem and Elise Stefanik seen as possible candidates

The writer pointed out that Noem has a personal incentive for going after Haley since her name has been put forward as a potential candidate.

However, Martin also wrote that "few in Trump’s inner circle are enthusiastic" about Noem given "her support for a strict state abortion ban" as well as allegations that she had an affair with former Trump campaign manager Lewandowski.

Another possibility is New York Republican Rep. Elise Stefanik, with Martin asserting that few "have been less subtle about their interest in the post."

He argued that Stefanik's decision to publicly confront college presidents late last year was "aimed in part at proving to Trump that she can perform on a stage bigger than her North Country district."