If Christie (or Lonergan) can get at least 50% in Bergen County, they can squeak by. They need high turnout in the GOP districts, but also need to pick up suburban Dem voters in Middlesex, lower Bergen, and the Philly suburbs in Camden/Gloucester/Burlington counties (the latter of which have become more heavily Dem since the 1980s, but have enough swing voters to make a difference).
Camden, the cesspool of hell. Don’t expect salvation of votes from there.