An important dimension of the “modernization hypothesis” is the claim that there is a long-run positive relation between socio-economic development and political democracy. This research strand of the modernization hypothesis, however, has been challenged in a series of papers by Daron Acemoglu, Simon Johnson, James Robinson, and Pierre Yared. Employing econometric specifications that condition on lagged democracy, income, education, time effects, and a proxy for the level of capitalist institutions, and applying the System Generalized Method of Moments estimator to a sample that spans recent decades, we find, in congruence with the modernization hypothesis, that income and education predict democracy.