Democrat Stacey Abrams, who acknowledged defeat Friday in her bid to be Georgia’s next governor, refused to say Sunday that her Republican opponent, Brian Kemp, was the “legitimate” governor-elect.

Abrams has long decried Kemp’s voter role purges and other measures as voter suppression in his since-resigned role as secretary of state, and said Friday that she would sue the state ” for the gross mismanagement of this election and to protect future elections from unconstitutional actions.” Watch below: