Former United Nations Ambassador Nikki Haley is angling to steal Vice President Mike Pence's spot on the 2020 presidential ticket before next November, said MSNBC host Joe Scarborough on Monday.

The "Morning Joe" co-host was discussing Haley's new book, "With All Due Respect," and claimed her writing was a dog whistle meant to signal to President Trump that she is ready to become his new right hand.

“This wasn't even about book buyers. For Nikki Haley, this was an audience of one,” he said. “She’s putting herself in position to be Mike Pence’s replacement if the president decides he needs to replace Mike Pence.

"And this was an audition," Scarborough continued. "Just like [Bill] Barr wrote that memo that Donald Trump fell for -- hook, line, and sinker and became attorney general. That’s exactly what this book is all about.”

PENCE BLASTS 'ANONYMOUS' BOOK, IMPEACHMENT PROCEEDINGS AS HE FILES FOR TRUMP IN NEW HAMPSHIRE

Haley drew criticism from Scarborough for writing about cabinet-level infighting within the Trump administration and for falsely trying to paint the tension as unprecedented. He also asked if she took her concerns about other members of the administration directly to the president.

"This not only happens in the Trump administration -- this happened in the Bush administration, it happened in the Clinton administration. This happens in every administration," he said. "It’s called bureaucratic infighting."

"She heard a conspiracy, in her mind, against the president. Did she act on it?" Scarborough added.

CLICK HERE TO GET THE FOX NEWS APP

Haley's book comes out on Nov. 12 and is billed as "a revealing, dramatic, deeply personal book about the most significant events of our time."