Lamont made an impressive showing at the convention, winning a remarkable 33 percent of the delegates--more than double what he needed to wage a primary. But even with a primary in the offing, you can expect most unions to stay on the sidelines.
About a dozen unions, mostly smallish locals, have endorsed the three-term incumbent. But Lieberman's in-your-face support for an unpopular war and an unpopular president has turned many working people against him, especially union activists.
At the same time, labor Democrats are more interested in unseating a Republican governor and three Republican members of Congress than in replacing a generally pro-labor Democrat Lieberman's lifetime AFL-CIO voting record is 84 percent with a kinder, gentler Dem.
There are loads of quotes from Union leadership in the article. It will be interesting to see if Lamont can make some inroads with any of the larger unions, though I'm not sure how wise it would be for them to jump in until after the primary.
Bass, Carole. "Lieberman, Lamont, Labor" Fairfield County Weekly. 5/25/06