GOP gubernatorial hopeful Bruce Blakeman slammed Mayor Zohran Mamdani as a Manhattan elitist who is failing the outer boroughs during a Sunday rally at the site of a planned Brooklyn homeless shelter Blakeman, the Nassau County executive who is poised to take on Gov. Kathy Hochul in November, spoke to a crowd of about 50 supporters at the future site of a shelter on 86th Street in Bensonhurst, claiming kinship with Queens and Brooklyn and accusing the lefty mayor of being indifferent to their needs. “We share a lot of the same kinds of neighborhoods,” the Long Islander said. “These are more suburban neighborhoods than urban neighborhoods. And people like the character. If they wanted a more urban environment, they can live in Manhattan. Bruce Blakeman said Mayor Mamdani and Manhattan “elitists” don’t care abou tthe outer boroughs. Gregory P. Mango for NY Post The site of the planned and controversial 150-bed homeless shelter in Bensonhurst. Gregory P. Mango for NY Post “They want local control.…