Diversity is key as Democrats aim to take on Trump | Video
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Diversity is key as Democrats aim to take on Trump | Video(Updated: )
Voting day is more than a year away, but the 2020 US election campaign is well underway. A diverse field of Democratic candidates are criss-crossing America as they attempt to win the nomination to take on President Donald Trump. Harry Horton has been on the campaign trail to meet many of the candidates and assess the competition.