SEATTLE - Grunge-rock pioneer Krist Novoselic says he may run for lieutenant governor of Washington state in what would be the next step of a transition from rock star to politician. Novoselic, a founder and bass player of the seminal band Nirvana and more recently an activist Democrat, is enough of a politician already to be wary about facing off against fellow Democrat Lt. Gov. Brad Owen, a two-term incumbent. But he's thinking seriously about the intra-party challenge, is talking to party leaders and says he does not want to go through 2004 as a spectator. "I've been really contemplating...