DOMINO EFFECT: Look for Republican musical chairs...

DOMINO EFFECT: Look for Republican musical chairs here if Rep. Robert K. Dornan announces his bid today for Alan Cranston’s Senate seat, as expected. . . . Another local Republican, Rep. William E. Dannemeyer, is running for the Senate seat now held by John Seymour. And a third House seat could emerge from reapportionment, said the GOP’s Greg Haskin. “The professional candidacy business,” he said, “could be a real booming one here.”