Introduction -- AARP's history: growing up and branching out -- AARP and its members: maintaining America's largest interest group -- A pragmatic voice and a powerful ally -- AARP's influence: thirty-eight million members, Washington insider status, and no campaign dollars -- Business, advocacy,...

Mancur Olson's theory of the decline of nations is path-breaking in political economics. It has been tested cross-sectionally in numerous empirical studies. We survey the existing results briefly, with a special focus on studies using the number of lobbies as an exogenous variable. Using data...

With interest groups significantly affecting economic performance (according to Mancur Olson) and a vital interest of governments in economic growth and low unemployment in order to win elections, there should be a link between political business cycles and the evolution of lobbies over time...

What impact do mass civil society groups have on public policy? We study this issue by analyzing opposition to national prohibition by German-American groups and associations in the early twentieth century, before and after state-sponsored suppression of them that coincided with U.S. entry to...