Pedzisa mutsara unotevera: Philadelphia yaiva nhare yeRepublican Party kubva kuHondo Yenyika yeAmerica kusvika pakati pema1930. Guta racho rakagamuchira kokorodzano yokutanga yenyika yeRepublican muna
1856 - gore rokutanga. Kunyoresa kweDemocratic kwakawedzera mushure meGreat Depression; zvisinei, guta harina kutakurwa neDemocrat Franklin D. Roosevelt mukukunda kwake kukuru kwa1932 sezvo Pennsylvania yaive imwe yenyika nhanhatu chete dzakakundwa neRepublican Herbert Hoover. Kuvhota kwakawedzera kubva pa600 000 muna 1932 kusvika kunenge 900 000 muna 1936 uye Roosevelt akakunda Philadelphia neinopfuura 60% yemavhoti. Guta racho rakavhotera Democratic musarudzo dzose dzomutungamiri wenyika kubvira muna 1936. Muna 2008, Democrat Barack Obama akawana 83% yemavhoti eguta racho. Kukunda kwaObama kwakanga kuri kukuru zvikuru muna 2012, achitora 85% yemavhoti. Muna 2016, Democrat Hillary Clinton akawana 82% yemavhoti.