Vice President Kamala Harris’ path to 270 electoral votes all but hinges on a “massive overperformance” in the suburbs of Philadelphia as she trails in the critical battleground state, according to a political insider. Tara Palmeri, senior political correspondent at Puck News, took to X on Tuesday night to share insights from a senior Democratic official in Pennsylvania. ALSO READ: ‘Bloodbath’: Inside the MAGA playbook for mayhem after Election Day Want more breaking political news? Click for the latest headlines at Raw Story. “Harris is looking like the underdog in Pennsylvania, according to …