CivicSim
An agent-based simulator of U.S. public opinion. Agents are instantiated from American Community Survey microdata and conditioned on demographic-opinion distributions from the Pew American Trends Panel, aiming for a synthetic electorate whose opinions track the real U.S. adult population at the demographic-cell level. Includes experiments benchmarking demographic alignment between the census and survey corpora and testing how well opinions transfer across geographies. The thesis: realistic policy simulation needs grounding in real population data, not just model scale.