“I had always thought of cliché as a suburb of Paris until I read the political reporting in America,” a visitor to these shores is said to have remarked, bringing to mind the newspaper editor who proclaimed to his staff assembled: “What this newspaper needs is some new clichés.“ In this presidential year, the boys in the press room and those in the camera lenses are fulsomely obliging. Martin Nolan, formerly national correspondent for the defunctREPORTER and now a Washington correspondent for the BOSTONGLOBE,finds, however, that for all their energy the campaign reporters are mostly telling readers what might happen at the expense of telling them what has already happened.