Sanders turns to Colorado in flagging fight for Democratic nomination
Success of grassroots campaigning for Jewish senator no longer applies now that fight for presidential nomination is going national.
Democratic presidential candidate Sen. Bernie Sanders (D-VT) speaks to a crowd of supporters at the Mayo Civic Center on February 27, 2016 in Rochester, MN(photo credit: STEPHEN MATUREN / GETTY IMAGES NORTH AMERICA / AFP)ByMICHAEL WILNERUpdated: