Hawaii: Former Rep. Ed Case (D)
Case announced on April 10, in an e-mail to supporters and a video posted online, that he plans to run for retiring Sen. Daniel Akaka's seat. "I'm running for the Senate because I believe we can and must do better, and that our Hawai'i offers a better way forward for our country," Case said in his e-mail.
Case isn't likely to be the only well-known Democrat entering Hawaii's race. Other possible candidates include current Reps. Colleen Hanabusa and Mazie Hirono, and former Honolulu mayor Mufi Hannemann. Anyone who does run against Case in the Democratic primary is likely to run to his left; he compiled a largely centrist record while in Congress, creating some enemies among the state's liberal Democratic base.