US Senator Bernie Sanders announced yesterday that he will run again for president in 2020, making a second attempt to win the Democratic Party’s nomination.

The senator from Vermont, 77, said: ‘We began the political revolution in the 2016 campaign, and now it’s time to move that revolution forward.’

Sanders – an independent who caucuses with the Democrats – is one of the best-known names to join a crowded and diverse field of Democratic candidates, and early polls suggest he is far ahead.

His calls for universal government-provided healthcare, a $15 national minimum wage and free college education electrified young voters, raised millions of dollars in small donations and are now pillars of the party’s left-wing.

First elected to Congress in 1990 and Vermont senator since 2007, Sanders was runner-up in the 2016 Democratic primary, losing out to Hillary Clinton.