Jason Millman, writing in the Washington Post's Wonkblog, says that the Republican victory in several gubernatorial races means that Medicaid expansion under Obamacare may not happen in several states: "Fifteen of the 23 states that hadn't yet expanded Medicaid held gubernatorial elections last night, and it looks like only Alaska will elect a candidate who campaigned for the Medicaid expansion." There might even be a real chance of undoing Medicaid expansion in Arkansas.
But Millman also notes that several Republican governors have said they might explore expanding their Medicaid coverage and "Medicaid expansion has support from hospitals, which hold considerable political clout and have a lot to lose without the infusion of federal funds from the expansion."