At a street corner in a gritty Boston neighborhood, a truck driver leans out his window and hollers a question at congressional candidate Raymond Flynn. "Hey, Ray! Can I have a job if you get in?"
Flynn, the former Boston mayor, jogs over to the truck. "Sure," he says with a laugh. "I appreciate your support."
Trading jobs for votes may be one Boston tradition that's fallen by the wayside, but the city's politicians still do most things the old-fashioned way. There aren't many other places in America where a candidate can declare himself an "unabashed, unrepentant, unreconstructed liberal"--and leave most...