Bernie Sanders - Jon Stewart on Bernie Sanders

Which is exactly why they'll probably get elected. They are literally just not sugarcoating their goals, and are successfully getting on the backs of those fed up with the system.

He's a US Senator from Vermont that considers himself a Democratic Socialist, and is considered the biggest threat to Hillary Clinton's chance for the nomination due to his grassroots support. He is also known for his frank and at times anti-establishment talk, leading many to consider him the liberal equivalent to Donald Trump.