Former US President Barack Obama has issued a warning to Democratic presidential candidates, cautioning them against policies that are not “rooted in reality”.

Mr Obama said Democrats risked alienating voters if they lurched too far to the left politically.

The former president, speaking at a fundraising event, said most voters didn’t want to “tear down the system”.

Mr Obama is yet to publicly back a Democratic candidate.

The field is crowded, with 18 Democrats vying for the nomination to take on Republican President Donald Trump in the 2020 election.

source BBC