MADISON, Wis. (AP) — Roughly 92,000 people on Wisconsin's BadgerCare program will begin receiving letters this week from the state notifying them that their coverage is ending. The letters set to begin being mailed Monday also notify Medicaid recipients that they need to purchase health insurance through the new online exchange, or marketplace, which is open for enrollment starting Oct. 1. The letter tells those losing coverage they must apply for insurance through the marketplace by Dec. 15. Those losing BadgerCare Medicaid coverage under Gov. Scott Walker's budget are those who earn between 100 percent and 200 percent of the federal poverty level. Walker rejected federal money that would have paid to keep those earning up to 138 percent of poverty enrolled in Medicaid.