For Garden State Democrats, the reversal of fortune these past few years has been startling. For the decade and a half before Christie’s 2009 election, Democrats were practically unbeatable in the state. There were two main ingredients to this success: Demographic changes that made the state more diverse and Democrat-friendly, and the post-1994 redefinition of the national Republican Party as Southern-dominated, Christian-infused and ideologically far to the right; the culturally liberal suburbanites who’d happily voted for Kean, Clifford Case and even Ronald Reagan began fleeing the G.O.P. label in droves. Even when it seemed like they were doing everything they could to lose elections, Democrats would still come out on top.
But now they’re fighting for their lives, facing not only the prospect of four more years without the governorship, but also the potential unraveling of a down-ballot empire on which the jobs and contracts that give the party its organizational and financial muscle depend. It’s a turnaround that can be attributed to a host of culprits, but one towers over the others: The New Jersey Democratic Party itself.