Even presidential candidates must pay homage. The Philadelphia cheesesteak is politics, people, theater, historic landmarks -- and one great sandwich. At Pat's or Geno's, state your cheese (Whiz, provolone, American -- no Swiss!) then "wit" (with grilled onions) or "witout." Oh, and learn to do "the lean" (mastered by Gov. Rendell) to avoid dripping on your pants or shoes.