U.S. presidential hopefuls Sanders, Biden in tight race in early primary states

U.S. Senator Bernie Sanders and former Vice President Joe Biden appear locked in a tight race for the Democratic presidential nomination, as both campaigned in Iowa on Sunday with only days left until the first contest.

U.S. presidential hopefuls Sanders, Biden in tight race in early primary states
U.S. Senator Bernie Sanders and former Vice President Joe Biden appear locked in a tight race for the Democratic presidential nomination, as both campaigned in Iowa on Sunday with only days left until the first contest.