Fani Willis
The decision will further delay another of Trump's criminal trials.
Nathan Wade resigned so District Attorney Fani Willis could continue prosecuting the case.
A California man has been indicted by a federal grand jury in Atlanta for sending threats to District Attorney Fani Willis.
"There is simply no trial court error to be found in the decision to deny disqualification,” the Fulton County district attorney wrote.
WHAT'S HAPPENING
Trump had tried to get Willis and her office tossed off the case, saying her romantic relationship with a top prosecutor created a conflict of interest.
The Fulton County prosecutor denied feeling any embarrassment for her conduct, saying, "I don’t think my reputation needs to be reclaimed."
It’s now up to the appeals court to decide whether the court will hear it.
A Georgia judge ruled that Fani Willis could stay on the case after it was revealed she had a romantic relationship with a prosecutor.
The Fox News host acknowledged the lawyer mix-up after airing the image earlier on her show.
The Fulton County D.A. won the right to remain on the prosecution, but CNN's Elie Honig pointed to "devastating" language in the judge's opinion nonetheless.