The coalition of hospital lobbyists, insurance companies, and political operatives who pushed through Medicaid expansion under Obamacare in Arizona have a repeal fight on their hands.Over 300 grassroots activists came together on Saturday in Phoenix to kick off a petition drive to put repeal of Governor Brewer's Medicaid expansion plan on the ballot. If successful, the drive will showcase the power that comes when principled conservatives organize inside a political party.