The Republican primary may be as good as over, but there is still time for ugliness between Donald Trump and his only remaining opponent, Nikki Haley.

During a rally in South Carolina this weekend, Trump asked "what happened" to Haley's husband, Michael, who is currently on deployment in Africa.

Trump told the crowd about a visit he received from Haley at his Palm Beach resort of Mar-a-Lago:

She comes over to see me at Mar-A-Lago. ‘Sir, I will never run against you.' She brought her husband. Where’s her husband? Oh, he’s away. He’s away. What happened to her husband? What happened to her husband?! Where is he?! He’s gone. He knew. He knew.

In an interview with Fox News's Dana Perino, Haley slammed Trump's "disgusting" comments, which she described as an insult to all veterans:

It’s disgusting! I mean, every bit of it’s disgusting, you know, to sit there and mock my husband for not being with me on the presidential trail because he is deployed and serving our country.

You mock one veteran, you’re mocking all veterans. But this is a pattern, Dana. He’s done this over and over again. Whether he went and called military members suckers, whether he was at Arlington Cemetery saying what was in it for them, why would they do this? 

Haley pointed out Trump's own lack of military service:

The problem with Trump is he’s never been anywhere near a uniform.  He apparently had some sort of foot reason that he says he couldn't do that. But the reality is the closest he's come to harm's way is a golf ball hitting him on a golf cart.

These men and women sacrifice for us every day. They're willing to shed blood. That's the values that made this country great, and anybody that excuses what he continues to say against the military is hugely mistaken because this is going to be the president of the United States.

The dispute comes as Haley, who previously served Trump as his ambassador to the United Nations, continues to make the case that she still has a realistic chance of defeating Trump in the Republican primary.

Despite having lost out to Trump in all the state primary elections so far, Haley insisted last month that even a failure to win in her home state of South Carolina would not necessarily bring her campaign to an end. 

"I need to show that I'm building momentum. I need to show that I'm stronger in South Carolina than New Hampshire," Haley said in an interview with NBC's Meet The Press. 

"Does that have to be a win? I don't think that necessarily has to be a win. But it certainly has to be better than what I did in New Hampshire, and it certainly has to be close."

WATCH: @NikkiHaley tells #MTP she needs a better showing in her home state of South Carolina than she received in New Hampshire.@kwelkernbc: “But do you need to win?”

Haley: “I need to show that I’m building momentum. … That doesn’t necessarily have to be a win.” pic.twitter.com/zdbdjFu3sf

— Meet the Press (@MeetThePress) January 28, 2024

According to the latest RealClearPolitics polling average, Trump holds a seemingly insurmountable lead of 30 points in South Carolina and a 58-point lead nationally.