Bernie Sanders has congratulated Jeremy Corbyn on his election to lead Britain's Labour Party.

The Democrat presidential hopeful said he is 'delighted' to support a leader who 'tells the billionaire class that they cannot have it all'.

'At a time of mass income and wealth inequality throughout the world, I am delighted to see that the British Labour Party has elected Jeremy Corbyn as its new leader,' he said in an email to Daily Mail Online.

'We need economies that work for working families, not just the people on top.'

His words come after Argentina's Cristina Kirchner gushed that 'hope has triumphed' and that Corbyn 'stands with Argentina' in their anti-American stance.

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'Delighted': Socialist Democrat hopeful Bernie Sanders applauded Jeremy Corbyn's landslide victory

Sanders has been likened to the newly-elected socialist as they both vie to run their countries with a hardline left-wing agenda, and just last week Corbyn told the BBC he was watching Sanders' campaign with 'great interest'.

Both have run surprisingly successful campaigns on the promise to shake up mainstream politics, boost tax and spend more.

After scraping together 35 nominations just minutes before the deadline, Corbyn rocketed to prominence and secured a landslide 59.5 per cent of the vote.

He celebrated with a rendition of socialist anthem The Red Flag as key experienced figures of the recently-defeated party resigned.

Sanders, a self-proclaimed socialist, leaped ahead of front runner Hillary Clinton in the Iowa polls this week in a shake-up few could have predicted when he tabled his nomination last year.

While Corbyn managed to lure voters with a vow to print more money, Sanders outlined a tax scheme to supposedly raise $50 billion a year - despite a Tax Policy Center study that found the policy would disproportionately affect middle income investors and the results would be nominal.

Corbyn won a surprising 59.5 per cent of the vote to lead Britain's opposition Labour Party on Saturday

Some analysts suggest Corbyn's win is a glimmer of hope for Sanders amid a rise in support for hardline leftwing leaders across Europe, such as Greece's resigned prime minister Alexis Tsipras, touting an anti-establishment mantra.

'If you’re Bernie Sanders, you’ll take some heart from [Corbyn's victory],' Tim Bale, a politics professor at Queen Mary University of London, told the Washington Post. 'If you’re Hillary Clinton, you’ll be nervous.'