From the day he was installed by Governor Charlie Baker in March, it’s been a battle for Berkshire District Attorney Paul Caccaviello to hold on to the seat. His September 4th loss to attorney Andrea Harrington in the bruising Democratic primary looked like it might have spelled the end for the 30-year veteran of the office. But WAMC has learned Caccaviello is mounting a write-in campaign. He tells WAMC that he’s just begun to fight.