2019 New York Laws
EXC - Executive
Article 5 - Department of Law
70 - Deputy Attorney-General to Act as Special District Attorney.

§ 70. Deputy attorney-general to act as special district attorney.
Whenever  the  governor  shall advise the attorney-general that he has
  reason to doubt whether in any county the law relating to crimes against
  the elective franchise is properly enforced, the attorney-general  shall
  require  from  the district attorney of such county, and it shall be the
  duty of such district attorney forthwith to make to the attorney-general
  a report of all prosecutions and complaints within his county during the
  year then last past for offenses under  the  election  law  and  of  the
  action had thereon.
The  attorney-general shall assign one or more of his deputies to take
  charge of  prosecutions  under  the  election  law.  Such  deputy  shall
  represent  the  people of this state in all such prosecutions before all
  magistrates  and  in  all  courts  and  before  any  grand  jury  having
  cognizance thereof. The deputies so assigned shall be appointed pursuant
  to  section  sixty-two of this chapter. They may be especially appointed
  thereunder for the purpose of such assignment and for the performance of
  the duties herein described.
Whenever the attorney-general shall advise the governor that there  is
  occasion  for  an  extraordinary term in any such county to inquire into
  and try cases arising under article sixteen of  the  election  law,  the
  governor  may  appoint  an extraordinary term of the supreme court to be
  constituted and held for the trial of criminal  cases  in  such  county,
  pursuant  to  section one hundred forty-nine of the judiciary law. Grand
  and petit juries shall be drawn and summoned for said term in the manner
  provided by law, and such cases shall be brought before such inquest and
  court as the  attorney-general  shall  direct.  All  the  provisions  of
  sections sixty-three and sixty-seven of this chapter shall apply to such
  extraordinary term.
It  shall  be  the duty of the district attorney of the county, and of
  the assistants, clerks and employees in his office, and  of  all  police
  authorities,  officers  and men within any such county, to render to the
  attorney-general  and  his  deputy  whenever  requested,  all  aid   and
  assistance within their power in such prosecutions and in the conduct of
  such  cases. The jurisdiction conferred upon the attorney-general herein
  to prosecute crimes, is concurrent in  each  county  with  that  of  the
  district  attorney;  but  whichever  of such officers shall first assume
  jurisdiction of a particular offense shall have  exclusive  jurisdiction
  to prosecute for the same unless or until the governor shall, by written
  order  filed  with  both  such  officers,  give such jurisdiction to the
  other.