DC Health Link will be targeting neighborhoods with higher uninsured populations for direct door-to-door outreach through its “Knock, Knock” Door-to-Door Canvassing Campaign. ” The campaign, which is part of the hyperlocal approach to reach the remaining uninsured, is designed to reach the residents in Wards 1, 4, 5, 7, and 8 where they live, work, shop, play and pray.