(with F. Daniel Hidalgo).
Abstract: In Mexico, citizens are invited to participate as poll workers if the first letter of their last name and their month of birth is randomly drawn. We match registered poll workers for 2012 and 2009 elections in a northern state in Mexico to a unique data set of party sympathizers to test whether poll workers’ personal party sympathies affect election outcomes. Using the proportion of eligible party sympathizers to serve as poll workers, we instrument for partisan citizens working at the polls. We find that having a partisan sympathizer as a poll worker increases vote share for that party by 0.4%