New York Governor David Paterson is being coy. "I can say I don't know who the next senator for New York is right now. I would swear to it," he said at a press conference yesterday. “I would figure by this weekend we would come up with a candidate," he said. "I have narrowed the field but don't seem to stay with the same pick for a period of time. I've tried . . . different scenarios." Yesterday, several contenders told the New York Post that Paterson is “certain” to choose Caroline Kennedy.