Well, LoBiondo’s district was Democrat for 20 years before he won it in ‘94 (Bill Hughes). I’m a little puzzled about your comment on Vineland. They’ve elected GOP Mayors for at least the past decade (a new one, Robert Romano, just this year).
Vineland is the largest city in New Jersey in terms of land area. It includes both tomato farms and housing projects. Cumberland County has a large black population (until the late 1940s, the overwhelmingly majority of blacks in New Jersey were in Cumberland/Salem/Cape May Counties), and a sizeable and rapidly growing Hispanic population, many of whom live in Vineland. Amazing that they elect a GOP Mayor, but so did Jersey City...