More Than a Feeling: Personality, Polarization, and the Transformation of the US Congress

Whatever you think about the widening divide between Democrats and Republicans, ideological differences do not explain why politicians from the same parties, who share the same goals and policy preferences, often argue fiercely about how best to attain them. This perplexing misalignment suggests that we are missing an important piece of the puzzle. Political scientists have increasingly drawn on the relationship between voters' personalities and political orientation, but there has been lit...