Donald Trump's campaign is pledging to destroy Nikki Haley's "reputation and image" as the Republican primary winds down to a two-way battle in New Hampshire.

“Nikki should get out while people still talk about her for 2028, or she’ll end up like all the 2016s that nobody thinks of as future presidents anymore,” a Trump campaign adviser said.

“A protracted ground war will cost us our money, but it will cost Nikki her reputation and image.”

Trump targets Nikki Haley

Trump's record victory in Iowa's caucuses on Monday put him on a clear path to win the primary, but Haley's campaign is encouraged by polls that show her within striking distance in New Hampshire's primary next Tuesday.

Both Trump and Haley have largely moved on from attacking Ron DeSantis, who finished a distant second in Iowa despite investing heavily in the state and visiting all 99 of its counties.

Although Haley came in third in Iowa, she said the results made the primary a two-way between her and Trump, citing her polling in New Hampshire.

Trump has ramped up his attacks on Haley, labeling her a Hillary Clinton-esque "globalist" and referring to her by her first name, Nimrata. Haley is of Indian heritage.

“Anyone listening to Nikki ‘Nimrada’ Haley’s wacked out speech last night, would think that she won the Iowa Primary. She didn’t, and she couldn’t even beat a very flawed Ron DeSanctimonious, who’s out of money, and out of hope,” Trump posted on Truth Social.

Haley blasts Trump's "chaos"

CNN and ABC have cancelled debates in New Hampshire after Haley said she would not attend without Trump being there also. Trump has boycotted the primary debates, citing his formidable lead.

In the final days before New Hampshire, Haley has blasted Trump by attacking his "chaos," his age, and his legal troubles, which drew Trump back into court this week in New York.

“What I will tell you is I’m focused on the economy, the border and education and getting our country back on track," she told CNN.

"If he’s sitting in a courtroom, that goes back to what I’m saying. We can’t continue to be distracted. We can’t continue to be in chaos. We have a country to save,” she said.

If Trump wins New Hampshire, as the polls suggest he will, his momentum in the primary will become virtually unstoppable.

And Haley could get the same treatment as DeSantis, who was once hailed as Trump's heir apparent but has now been greatly diminished by his bruising face-off with Trump.