Quiz: How well do you know Bernie Sanders?

Bernie Sanders takes the stage before the second official 2016 U.S. Democratic presidential candidates debate in Des Moines.

Nati Harnik/AP

Vermont Sen. Bernie Sanders has ignited considerable enthusiasm among the liberal grassroots with his 2016 presidential bid, getting his pet causes a broader airing and keeping the pressure on Democratic frontrunner Hillary Clinton.

Though he's held elected office for several decades, Sanders arguably did not become a national name until he launched his presidential campaign earlier this year. He's elevated the fight against income inequality as a centerpiece of his campaign, railing against what he sees as the undue influence of the rich and well-connected. It's earned him a lot of goodwill on the left, and more than a few derisive comments from the right.

Sanders will join "Face the Nation" on Sunday's broadcast for an interview, so make sure you tune in! (Check your local listings for airtimes.)

But before that, take this quiz to find out how much you know about one of 2016's most exciting characters.