MADISON, Wis. (AP) – The uninsured now have 10 weeks to sign up for health insurance or face a penalty.  The new online marketplace, or exchange, where federally subsidized private insurance plans are offered went live on Tuesday. It is estimated that about 700,000 Wisconsin residents are eligible to shop for plans on the exchange.  That includes about 92,000 people currently on the BadgerCare Medicaid program whose coverage will end in January.  They and others without coverage will have to sign up by Dec. 15 in order to have a policy in effect for January.  Advocates, state regulators, public health officials and others who worked to spread the word about the enrollment period beginning didn’t know how many people would seek out help to sign up on Tuesday, or just do it privately online.