President Barack Obama's healthcare overhaul has never been popular in Arkansas, a state where even most Democrats regard the law as politically toxic. But with a quarter of the state's working-age population uninsured, a governor who once said he would have voted against the law now wants to use it to widen government-funded coverage to thousands of additional families. And he's relying on the move to help prevent a Republican takeover of the state Legislature for the first time since Reconstruction. Gov. Mike Beebe, the first Southern governor to back the law's expansion of Medicaid, has become an unlikely advocate for a central part of the overhaul that would expand Medicaid, a position made easier by the fact that he's not seeking re-election.