Pedzisa mutsara unotevera: Muna 1917, Greenfield akasarudzwa kuti ave nenzvimbo paPhiladelphia Common Council uye akashanda kusvikira muna 1920. Pakutanga aive muRepublican, akachinja mapato nekuuya kweNew Deal muna 1933 uye akaramba ari mutsigiri akasimba weDemocratic kusvika parufu rwake. Akafarikanya ukama hwapedyo navaPurezidhendi vazhinji kubva kuna Herbert Hoover kusvikira kuna Lyndon Johnson. Muna 1951 akaita basa guru mukukundwa kwemuchina weRepublican muPhiladelphia wakanga wagara kwenguva refu. Sachigaro wePhiladelphia's City Planning Commission pasi paMeya Richardson Dilworth (1956<unk>58), akaisa hwaro hwekuvandudzwa kweSociety Hill senzvimbo yakasarudzika yepamusoro-yepakati-kirasi inokwanisa kukwezva vagari vekumaruwa kudzokera kuguta. Nemhaka yokushingaira kwake mune zvematongerwe enyika, muna 1948 Philadelphia yakagamuchira zvose zviri zviviri
Kokorodzano dzebato reRepublican nedzebato reDemocrat.