25 Pa. Stat. § 3163
Upon completing the tabulation of any election for United States Senator or Representative in Congress, the Secretary of the Commonwealth shall lay the same before the Governor, who shall immediately issue certificates of election under the seal of the Commonwealth, duly signed by himself, and attested by the Secretary of the Commonwealth, and deliver the same to the candidates receiving the highest number of votes for the respective offices. The Governor shall also transmit the returns of such election to the President of the United States Senate, in the case of the election of a United States Senator, and to the Speaker of the House of Representatives of the United States, in the case of the election of representatives in Congress.
25 P.S.§ 3163