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The majority of candidates for mayor would overhaul or dismantle the Boston Redevelopment Authority, raising the possibility of sweeping change at an agency that has shaped decades of development and become a prime lever of power for Thomas M. Menino.
One candidate, State Representative Martin Walsh, wants to abolish the BRA as a stand-alone agency, while several others want to divide its responsibilities among multiple bodies; still others would keep the agency intact, while tinkering to make it more transparent.
Their responses to a Globe questionnaire establish some of the most stark differences to date in the wide open race for mayor, and hold major implications for billions of dollars of real estate investment at a time of increasing construction activity in Boston.