Democratic presidential candidates' tussle over health care reform and Barack Obama's legacy continued Saturday, with former Vice President Joe Biden declaring he's "against any Democrat who wants to get rid of Obamacare." Biden spoke during a forum held by the nation's largest public employees union in Nevada, the state that will cast the first votes in the West in next year's primary. He was one of 19 Democratic hopefuls scheduled to speak before the American Federation of State, County and Municipal Employees, which represents 1.6 million workers nationwide, the AP reports. His comments marked a stark contrast with Sen. Elizabeth Warren, who said she plans to transition to a government-run "Medicare for All" system. From the candidates: