Nguyen, Bang Dang and Do, Quoc-Anh and Lee, Yen Teik and Nguyen, Kieu-Trang (June 22, 2012). Out of Sight, Out of Mind: The Value of Political Connections in Social Networks Available at SSRN:


Discipline: Finance


Focusing on former university classmates among corporate directors and U.S. congressmen, and the regression discontinuity design of close Congress elections from 2000 to 2008, we provide robust evidence of the causal impact of social-network based political connections on firm value. The value of political connections varies across politicians, states, and firms remarkably more than previously reported. While connections to powerful senators increase firm value, a challenger’s election causes a weighted average treatment effect of -3.24% on connected firms’ cumulative abnormal returns surrounding election day. The paper’s finding stresses the importance of state-level political connections, especially in more corrupt states.