CNN 's Joe Sutton contributed to this report . NEW : Federal judge tells attorneys to expect ex - mistress to testify for government . Jennifer Hunter is the ex - mistress of former Democratic presidential candidate John Edwards . Edwards ' upcoming criminal trial will look at whether campaign money went to her . Hunter denies any wrongdoing .
NEW : Federal judge tells attorneys to expect ex - mistress to testify for government . Jennifer Hunter is the ex - mistress of former Democratic presidential candidate John Edwards . Edwards ' upcoming criminal trial will look at whether campaign money went to her . Hunter denies any wrongdoing .