ATLANTA (AP) — A judge has ruled that the Georgia state Senate can subpoena Fulton County District Attorney Fani Willis as part of a inquiry into whether she has engaged in misconduct during her prosecution of President-elect Donald Trump but is giving Willis the chance to contest whether lawmakers’ demands are overly broad.

A new prosecutor will have to be appointed to oversee the case if Willis' disqualification stands—or the litigation could end altogether.

A state appeals court has removed Fulton County District Attorney Fani Willis from the Georgia election interference case against Donald Trump and others.

The decision, which Willis is likely to appeal to the Georgia Supreme Court, is a major victory for Donald Trump and his co-defendants and could doom the high-profile prosecution.

The panel overruled the trial judge, who had allowed Fani T. Willis to keep the case despite a romantic relationship that defendants said created a conflict of interest.

The appeals court still denied defendants’ effort to throw out the case. But Trump's team quickly claimed victory.

A state appeals court earlier this month removed Willis from the Georgia election interference case against Donald Trump and others, citing an “appearance of impropriety."