AUGUSTA, Maine (AP) — Many states are gearing up to enroll more residents into Medicaid coverage starting in January. But thousands of Mainers are preparing to lose coverage this winter because of changes to the state's program and the decision not to expand coverage under the federal health care overhaul. More than 15,000 low-income parents are expected to lose Medicaid coverage in January when changes to the state's Medicaid program kick in. An additional 10,500 adults with no dependent children and incomes less than $11,500 are facing the end of their coverage this winter even though they would have kept their coverage if the state had agreed to expand Medicaid.