This work has important implications. Organized labor has declined dramatically over the past several decades, due in part to economic globalization, but also by the policy decisions made by the federal and state governments. Of all the factors that are correlated with political knowledge, such as: age, education, gender, race, income, and interest in politics, union membership is the only one that can feasibly be influenced by politicians. Policies that weaken labor unions may end up depriving people, particularly those with less formal education, not only of a source of political mobilization, but also an important source of political information.