Below is a full list of endorsed candidates from the state AFL-CIO convention. I haven't seen a complete list in the media so I thought it would be worth posting here.
Secretary of State
Congress: 1st District
Congress: 2nd District
Congress: 3rd District
Congress: 4th District
Congress: 5th District
The CT AFL-CIO has a .pdf of the full list, including nominees for State Senate and State Representative here.
"2006 Connecticut AFL-CIO Endorsements." http://www.ctaflcio.org/. 6/28/06
"DeStefano Earns Historic Endorsement from Connecticut AFL-CIO!" Campaign Press Release. 6/27/06
"Major Labor Groups Endorse Senator Lieberman." Campaign Press Release 6/27/06
Spigel, Jan Ellen. "CONNECTICUT AFL-CIO ENDORSES DIANE FARRELL." Campaign Press Release 6/27/06
"Chris Receives Warm Welcome from Connecticut Workers". Campaign Blog. 6/28/06