I know why: sabotaging the Democratic Party is his raison d’etre This No Labels gambit is such utter bullshit I’m hard pressed not to just start screaming into the void. I’ve been watching Joe Lieberman take a wrecking ball to the Democratic Party for decades now and he’s not done yet. In this article in the Atlantic, he insists that he doesn’t want Trump to be the nominee and that he just wants to provide a “moderate” “centrist” option since that’s what he believes everyone in America really wants. But he’s very hard pressed to answer why he is determined to threaten his old friend Joe Biden: Lieberman is clear about his distaste for Trump, but he’s hazier on the question of why—or even whether—Biden has fallen short. He’s said repeatedly that if the choice came down to Biden or Trump, he’d vote for the Democrat, and he speaks affectionately of a man he first met nearly 40 years ago and with whom he served for 20 years in the Senate. Yet he’s still hunting for a better option. I asked him whether he supported a third-party ticket because Biden had done a bad job or because voters think he’s done a bad job. “I think it’s both,” Lieberman replied. “He’s an honorable person, but he’s been pulled off his normal track too often” by pressure from the left. That’s a frequent talking point from Republicans and a complaint Manchin has made from time to time. The perception that Biden has veered…