We're used to conflating political parties (Republican and Democrat) with political ideologies (conservative and liberal), but the two were very distinct only a few decades ago. In this episode of Rationally Speaking, Julia talks with political scientist Hans Noel about why the Democrats became the party of liberalism and the Republicans the party of conservatism, whether voters are hypocrites in the way they apply their ostensible ideology, and whether politicians are motivated by ideals or just self-interest.