Can constitutions improve democracy? Sometimes, but not always

Does adopting a constitution lead to better democracy? Not necessarily, write Todd A. Eisenstadt, A Carl LeVan, and Tofigh Maboudi, who studied 138 constitutions from a 37 year-period. They find that in many countries, the constitution-making processes did not incorporate broad public consultation, meaning that the drafters were often able to grab power by codifying benefits for themselves and for their supporters