The text intends to figure out the issue about potential differences between the traditional political Colombian parties during the first half of the XX century. The authors argue that, indeed, there were substantial differences between Liberal and Conservative, although not exactly those the first analysts of The Violence determined. The article starts with an exhaustive revision of relevant literature, examines endogenous theories and reconstructs information of the Colombian elections between 1922 and 1949. The result of this task suggests that the Colombian political system, before the “great convergence” of the 60’s, was built on a number of real social fractures, observable and “politically operational”.