WASHINGTON, May 31 - As she prepares to run for re-election next year, and perhaps make a presidential run in 2008, Senator Hillary Rodham Clinton is counting on the counsel of a tight-knit group of advisers who possess a set of qualities that she may prize above all others: discipline and loyalty. Leaks? Public skirmishes? None of this tends to happen in Hillaryland, as Mrs. Clinton's advisers call the inner circle, mostly because the people who have gained entry into this exclusive club have shown strict devotion to her through the years, including her darkest days in public life. In...