Former US President Donald Trump, who is hoping to win a second term, was widely booed during his speech at the Libertarian convention.

Some audience members applauded and cheered as Mr Trump took to the stage, but soon a choir of jeers took over the room.

Mr Trump hit back at his critics saying: "Maybe you don't want to win... keep getting your 3% every four years."

The Libertarian Party puts individual rights and free markets at the core of its beliefs.

Their 2016 presidential candidate, Gary Johnson, won about 3% of the national vote.

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