Donald Trump would lose 2020 presidential election to Bernie Sanders or Joe Biden, new poll suggests

The polling will encourage Sanders supporters: Getty
The polling will encourage Sanders supporters: Getty

Donald Trump would lose to Bernie Sanders and other Democrats in a 2020 Presidential election, according to a new poll.

The incumbent would lose by 13 points — 52 per cent to 39 per cent — and by an even greater margin against former Vice President Joe Biden, Public Policy Polling (PPP) found.

The Democrat-aligned firm tested voters' preferences for a string of potential opponents for Mr Trump.

The billionaire would also lose to Senator Elizabeth Warren by a seven-point margin, it found in a survey of 836 registered voters.

Its poll had a margin of error of 3.4 per cent.

Mr Sanders, the Vermont senator who lost the Democratic presidential nomination for the 2016 election to Hillary Clinton, has been a fierce and outspoken critic of Mr Trump's administration and particularly its stance on healthcare.

Rumours have swirled around Mr Biden after the launch of a political action committee — a fundraising vehicle — he announced earlier this summer, called American Possibilities.

Mr Trump named Ms Warren as a potential rival in the 2020 during a speech to the National Rifle Association.

PPP also found that more than half of voters — 53 per cent — wished Barack Obama were still President. Forty-nine per cent favoured Hillary Clinton.