Providing for the submission to the qualified electors of the City of Philadelphia of the proposal set forth in a Resolution approved by Council proposing an amendment of the Philadelphia Home Rule Charter relating to Councilmembers elected at large, including the number of such members who shall serve on Council, the number of candidates for Councilmember at large each party or other political body is permitted to nominate, and the number of Councilmembers at large for which each elector has the right to vote, and authorizing the appropriate officers to publish notice and to make arrangements — Open Common Ground