QUESTION: What do these people have in common? ANSWER: All may make a bid for S. I. Hayakawa's California senate seat in 1982. From the state that brought you Ronald Reagan, look for a rip-roaring contest in a couple of years when Hayakawa faces reelection. Besides Hayakawa, other Republicans who may contend for the seat are Rep. Barry Goldwater Jr., Rep. Paul McCloskey and Maureen Reagan, the president's older daughter. Among Democrats, Gov. Jerry Brown says he's considering a bid. If he goes for the brass ring. Tom Hayden probably won't. A couple of very long shots: author Gore Vidal -- now living near Los Angeles and reportedly quite pleased with the reception his views of American politics receive on the lecture circuit -- and former deputy secretary of state Warren Christopher. QUESTION: Which pictures don't fit in this group? ANSWER: The two who aren't broke. All former CIA employees who wrote books drawing on their years of service with the Agency. Marchetti (along with coauthor John Marks) criticized the agency's methods. Stockwell blasted the CIA's role in Angola. Agee attacked the agency's secret operations and named undercover agents. And Snepp criticized America's hasty and ill-conceived withdrawal from Vietnam. The memoirs written by the two men who aren't telling reporters they're in financial distress, ex-directors Colby and Helms, were bland, flattering portrayals of the CIA.