Coverage of the race for the Republican nomination for the Senate seat of retiring Senator Alan Cranston included an interview with government professor Bruce Cain, who provided an overall perspective on the race for the nomination. All three G.O.P. candidates participated in a radio debate concerning California and national issues, with Mr. Herschensohn and Mr. Bono speaking from the radio studio and Mr. Campbell participating by telephone. Coverage also included interviews with each of the candidates, and their television commercials.