The 2020 battle for the Democratic Party's presidential nomination is off to a fast though uncertain start with strong showings in the first two contests by Vermont Senator Bernie Sanders and former South Bend, Indiana, mayor Pete Buttigieg. Sanders, a progressive candidate, is getting a strong challenge from several moderate contenders in what experts believe could be a long race that could go all the way to the party's nominating convention in July. VOA National correspondent Jim Malone has more from Washington. VOA Khmer's Phy Sopheada narrates in Khmer.