25 Pa. Stat. § 3552
Any person convicted of the willful violation of any provision of this act shall, in addition to any of the penalties herein provided for, be deprived of the right of suffrage absolutely for a term of four years from the date of his conviction, and it shall be the duty of the proper registration commission to cause one of its members at the request of the trial judge to produce in court at the time of sentence the district register containing the registration card of such convicted person, which registration card shall thereupon be forthwith cancelled in open court in the presence of the convicted person by a member of the registration commission, who shall promptly also cancel the registration card of such convicted person in the general register.
25 P.S.§ 3552