Roger D. Congleton (George Mason University - Center for Study of Public Choice) has posted
The Constitutional Political Economy of Gordon Tullock on SSRN. Here is the abstract:
This review essay focuses on the subset of Gordon Tullock’s research that contributes to the constitutional political economy (CPE) research program. His most direct work on constitutional political economy is his joint work with James Buchanan, The Calculus of Consent (1962), which is widely acknowledged to be a classic work in the field. A good deal of his subsequent work also sheds light on the origins and properties of standing procedures for making and implementing public policies, although it is less explicitly “constitutional” in focus, and less recognized by other scholars working in the CPE research program.