Philadelphia Mayor Cherelle Parker's endorsement of state Sen. Sharif Street on April 15 has bolstered his trader consensus at 40.5%, matching physician Ala Stanford's 40.6% in the tight PA-03 Democratic primary set for May 19. A April 1-2 Public Policy Polling survey for pro-Stanford PAC 314 Action showed Stanford at 28%, state Rep. Chris Rabb at 23%, and Street at 16% among likely voters, but high undecideds underscore the fluid race in this deep-blue district replacing retiring Rep. Dwight Evans. Street benefits from union backing like DC33 and early fundraising edges, while Stanford holds the top ballot spot and outsider appeal on healthcare; Rabb draws progressive support from Justice Democrats. Late endorsements, fresh polls, or turnout in key Philly wards could tip the balance ahead of election day.