Where was that "Most loyal Yankees fan base" when Shea was packed in the mid to late 80's and Yankee Stadium was half empty. Both teams have diehard true blue fans which are about the same number for both teams. But for the most part New York is a frontrunner town and most New Yorkers are " who's wining the most now" since 1996 most of the front runners have been on the Yankees bandwagon and have never had a major reason to get off.