"Last year, Connecticut Democrats heard my call for an end to the war in Iraq and nominated me to be their US Senate candidate," Lamont wrote. "The pundits derided our campaign, but John Kerry had my back."
The Greenwich businessman joined Kerry's effort to defeat four GOP senators up for reelection in 2008: Susan M. Collins of Maine, John E. Sununu of New Hampshire, Mitch McConnell of Kentucky, and Norm Coleman of Minnesota.
Lieberman, running as an independent, defeated Lamont to win a fourth term. He has endorsed Collins, a colleague on the Senate Homeland Security and Governmental Affairs Committee. Collins campaigned for Lieberman in his 2006 election.
In an e-mail last week, Kerry, the 2004 Democratic presidential nominee, criticized "Roadblock Republicans" for opposing a bill passed by the Democratic-run Senate to set a deadline for bringing US troops home from Iraq.
Lamont followed up with his own e-mail.
"The activist energy of the 2006 campaign moved the entire national debate on Iraq," Lamont wrote. "It's time for another burst of activist energy to move the issue forward in GOP territory, and I'm proud to join John Kerry in calling on you to apply some pressure to the Republican caucus."
Earlier this year, Lamont struck a hard line against President Bush's plan to send 21,000 more troops. He said he sent e-mail to some 30,000 people, urging them to write lawmakers.
