Many who admire his years of service say that, at age 83, Rangel needs to make way for new blood. It's the same argument Charlie Rangel used more than 40 years ago, when he dared to challenge another Harlem legend, Adam Clayton Powell Jr., and captured his congressional seat. But the district has seen momentous changes in recent years. It now stretches into Washington Heights, Inwood, the South Bronx and the West Bronx, all areas where Latinos are a majority and are rapidly growing in numbers. Even historic central Harlem is not the same, with more upscale white and Hispanic immigrants moving in every day.