Senator John Kerry says losing last year's election hasn't soured him on wanting to be president. Asked if he wanted to run again in 2008, Kerry says it's too early to say. But he added: "Would I like to be president? Yes, obviously." Kerry made the comments today on C-N-N. The senator says he won't base his future presidential ambitions on whether other Democrats like Hillary Clinton join the race. During the interview, Kerry also said his vote authorizing President Bush to use military force was a mistake. He says he'd change his vote knowing what he does today.