Did you know that Australia is one of a handful of countries in the world that enforce Compulsory voting, and the only English-speaking country that makes its citizens vote? But how did this come to be: when and why was voting in Australia made compulsory? How has this affected our politics? And how else is the way we vote different from other democracies? Judith Brett joins us to talk about her new book "From Secret Ballot to Democracy Sausage: How Australia got Compulsory Voting."