The Republican Accountability Project issued a 30-second ad that starts with footage of Walker’s football career when a narrator says: "Do you think you know Herschel Walker? Well, think again."
"Listen to what his ex-wife had to say about him," the narrator states before the ad cuts to Walker’s ex-wife Cindy DeAngelis Grossman, who then describes claimed threats Walker made against her.
"His eyes would become very evil," Grossman states. "The guns and knives. I got into a few choking things with him."
She then states: "The first time he held the gun to my head, he held the gun to my temple and said he was gonna blow my brains out."
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In December, Walker explained to Axios that he’s "accountable" for what he’s done in the past after being asked a question regarding his relationship with Grossman and announced that he’s confronted his mental health issues.
"I'm always accountable to whatever I've ever done," Walker stated. "And that's what I tell people: I'm accountable to it."
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Walker explained to Axios that he considers himself best friends with Grossman today.
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The former college and pro football star will face off against incumbent Democrat Sen. Raphael Warnock in November.
Walker has not denied Grossman’s allegations, telling ABC News’ Bob Woodruff in a 2008 interview that he “probably did it,” but did not remember.
At the time, Woodruff questioned Walker regarding the possibility that the claimed incident was connected to his battle with Dissociative Identity Disorder.
“Do you not remember something like that because you think that was another alter ego, or do you want to get out of having to talk about it?” Woodruff asked.
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“No, no, no, no,” Walker announced. “I’m talking about everything else. If I can remember it, I’ll talk about it.”
Grossman and Walker married in 1983 and divorced in 2002.
A representative for Walker did not immediately respond to The Post’s request for comment on the ad.
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Walker, who has been backed by former President Donald Trump, easily won the Georgia Republican Senate primary in May, taking home over 70% of the vote.
Nonetheless, Walker’s campaign has been beset by a series of controversies that have hampered his standing against incumbent Democratic Sen. Raphael Warnock.