Finding a candidate who can defeat Donald Trump

Before the Democrats in the US face into battle with Donald Trump, they must first decide whether Joe Biden or Bernie Sanders has a better chance of winning, writes Bette Browne

Former US vice president Joe Biden has framed his White House bid as a battle against current president Donald Trump for the soul of America, but first the 76-year-old must face a bruising battle for the soul of his own party between the old guard and the young guard.