Any person who wilfully disobeys any lawful instruction or order of any county board of elections, or who refuses to obey their subpoena duly issued and served under the provisions of this act, shall be guilty of a misdemeanor, and, upon conviction thereof, shall be sentenced to pay a fine not exceeding five hundred ($500) dollars, or to undergo an imprisonment not exceeding one (1) year, or both, in the discretion of the court.
25 P.S.§ 3501