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The assumed reason for Bridgeghazi is that Fort Lee's mayor refused to endorse Chris Christie for governor, and the lane closures were meant to punish him. But, as many have pointed out, Christie was a shoo-in to win the election and didn't even ask the mayor for his endorsement -- not to mention several other mayors didn't endorse Christie and none of their towns were stuck in traffic for four days. What gives?

Well, Rachel Maddow posited a new theory -- and it is just a theory -- on her show tonight: that a long-running feud between Christie and state senate Democrats about Supreme Court justice appointments may have been the real reason for Bridgeghazi (you'll want to skip to 11:30 -- before that, it's just Maddow over-explaining Bridgeghazi several times):

So we've got Christie refusing to renominate a Democratically-appointed Supreme Court justice to a lifetime tenure in 2010 in an unprecedented move. State senate Democrats were outraged and threatened to refuse to confirm any of Christie's future Supreme Court appointments. For the most part, they've stuck to their guns.

Things have been tense. They still are, actually -- just a few days ago, Christie had to withdraw yet another nominee after Democrats refused to confirm him. The New Jersey Supreme Court has only five justices right now. It's supposed to have seven.