(1) At the discretion of the prosecuting attorney, in any prosecution under the election laws it shall be no exemption for a witness that his information may criminate himself, and no such information given by a witness shall be used against him in any prosecution, except for perjury, and if used on behalf of the Commonwealth he shall stand discharged from all penalties for any violation of the election laws so necessarily disclosed in the information he so discloses as tending to convict the accused.
(2) The statement of any person testifying in any case pending under the provisions of KRS 121.025, 121.045, 121.055, or subsection (1) of KRS 121.310 shall not be used against him in any prosecution or civil proceeding.