Edwards' lawyers argued in motions filed last month that the judge should throw out all six felony and misdemeanor counts, alleging the case was sought by a partisan Republican prosecutor bent on taking down a big-name Democrat.
Prosecutors, in turn, filed a stack of motions ridiculing the arguments seeking dismissal as baseless and ignorant of the law.
Edwards is accused of using about $1 million in undisclosed payments from campaign donors to cover up an affair during his 2008 White House bid.
Edwards has pleaded not guilty. A trial is scheduled to begin in January.