Unobserved Heterogeneity in Observational Studies of Political Behavior

摘要: This dissertation comprises three chapters dealing with unobserved heterogeneity in observational studies. In Chapters 2 and 3, I develop new estimators that deal with unobserved heterogeneity in the cases in which panel data is not available or the outcome of interest is binary, respectively. In Chapter 4, I analyze the effect of parties’ contacting voters on the extent of tactical voting in the 2015 and 2017 United Kingdom General Elections, applying the estimator developed in Chapter 3.