i honestly don't understand this

Democratic senators trying to save Lieberman.

Politico reports that Democratic senators are launching a “behind-the-scenes effort to save Sen. Joe Lieberman’s chairmanship“:

Sens. Chris Dodd (D-Conn.), Ken Salazar (D-Colo.), Tom Carper (D-Del.) and Bill Nelson (D-Fla.) are all involved in the effort, according to top Senate Democratic aides. These four senators — along with other Lieberman allies — are reaching out to the rest of the Democratic Senate caucus to try to ensure Lieberman survives a secret ballot vote on whether to strip him of his chairmanship of the Homeland Security and Governmental Affairs Committee.

This effort, along with kind words from Majority Whip Richard J. Durbin (D-Ill.) last night about Lieberman, is giving the Connecticut senator some serious momentum heading into next week’s secret vote. Dodd’s involvement in saving his home-state senator is an extraordinary turn because Dodd backed Democratic candidate Ned Lamont in 2006 against Lieberman, who won the Connecticut Senate race as an independent.

(Think Progress)
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What is the point of this? It doesn't sound like they are actually friends. What are we all missing?