It got 1 point more Republican. In no way should this district be treated as safe R. Obama still won it by 3.5 points.
In terms of a New Jersey district, there's simply no way for Democrats to win here. Adler's win was an open-seat fluke in the best Democratic year in decades, and he was promptly swept out two years later. The GOP bench here is strong; the Dem bench isn't -- that's why Democrats pressured Adler's wife to run. Just the way Burlington County is: competitive in statewide elections, but solidly Republican locally.