MPs' roles and activities have been measured in different ways: From the approach based in the analysis of "focus and style ", by Wahlke et al (1959 and 1962) to that focused in the direction of representational relationship and the moment of control (Thomassen and Andeweg, 2004). In this paper several ways to measure representation will be used in order to propose a model to better gauge Members of Parliaments' conceptions and activities of representation. That model will be applied to Spanish MPs, both national and regional ones.
