[T]heir success as ideological entrepreneurs allowed other groups to spring up in their place. Third Way, founded by ex-Clinton administration veterans, was savvier at media, more open in terms of how it developed policy and less deliberately confrontational with the left. Third Way's budget for 2011 is $7.5 million, according to Matt Bennett, one of its top staffers. A much larger group, the Center for American Progress, is now the leading generator of center-left Democratic ideas, and it has the brand and money to attract the brightest Democratic talent. More prosaically, the DLC did something in 2006 to permanently alienate them from virtually the entire party: they endorsed Joe Lieberman's re-election bid. Lieberman's stalwart support for the war in Iraq and for President Bush was just about the biggest sin of all to Democrats of the era. Some issues are zero sum, and the DLC found itself on the wrong side of history, as least as far as the Democratic Party was concerned. There are two other factors worth mentioning. One was that Big Labor became all the more important to helping Democrats get out the vote, and that made it more difficult for Democrats to affiliate with the DLC. The second was that the Netroots -- Atrios and Daily Kos and Chris Bowers -- thought the DLC's "centrism" was equivalent to the politics of concession and compromise.Read Marc's full post here.