25 Pa. Stat. § 2703
Upon the petition of twenty registered electors of any township, borough, ward or election district, to the court of the proper county, praying for the division or redivision of such township, borough, ward or election district into two or more election districts, or for the alteration of the bounds of any election district, or for the formation of one or more election districts out of two or more existing election districts, or parts thereof, or for the consolidation of adjoining election districts, the said court shall refer the said petition to the county board of elections, which shall make a full investigation of the facts, and shall report to the court its findings and recommendations as to the division, redivision, alteration, formation or consolidation of election districts prayed for. If the county board shall find that a division, redivision, alteration, formation or consolidation of election districts will promote the convenience of the electors and the public interests, it shall recommend a proper division, redivision, alteration, formation or consolidation of election districts, which must have clearly visible physical boundaries conforming with census block lines from the most recently completed Federal decennial census, and shall accompany its report with a map and a verbal description of the boundaries, as well as a certification of the number of electors registered in each of the resulting election districts for the immediately preceding general or municipal election. Such petitions may specify the boundaries desired by the petitioners, and may be accompanied by a map setting forth such boundaries. When petitioners request specific boundaries, their petition shall include a certification from the county board of elections of the electors registered in each proposed election district for the immediately preceding general or municipal election.
25 P.S. § 2703