De Blasio’s presidential headquarters is near his gym

De Blasio’s presidential headquarters is near his gym
Mayor Bill de Blasio has found the ideal campaign headquarters for his improbable presidential bid — a converted vacuum factory that specializes in short-term leases and is a quick walk to his Brooklyn gym. The term-limited pol’s scant campaign staff of just five people has parked at The Yard, a co-working space between Park Slope…