The 2022 PA Senate Primary In Philly, A Fetterman Upset, most people thought that Kenyatta would end up carry the City due to PA's Geographically polarized primary, but due to Fetterman's strength with Liberal and WWC Whites throughout Philly he was able to win the City with 37%
Fetterman still did poorly in the city, as compared to the rest of the state, thanks to said county polarization, & Ties to the African American community giving Kenyatta a strong boost.
In addition to the Kenyatta aspect the Philly machine going Hard for Lamb, made Philadelphia the place Fetterman performed the worst with minorities throughout the state with Lamb eating into his WWC support and doing relatively well with Latinos.
I should also note that both Fetterman and Kenyatta did relatively well with Upscale voters throughout Philly, (but especially in south Philly) With Fetterman Winning them handily
Should Also be noted that Lamb focused on Philly & SEPA more generally in an attempt to stop Fetterman's momentum.