As useful as the use of empirical data is in building a clear picture of voting behaviour it doesn't full show all aspects of political decision making whether that be from the electorate or the policy makers. As brings the idea of commitment as a key concept to the behaviour of political agents. That it is not only self interest that is the outcome of personal cost benefit analysis but it is also the idea of shared interests. That the key idea of utility needs to be defined not only as material utility but also as experienced utility, these expansions to classical rational choice theory could then begin to remove the weakness in regards to morals of the agents which it aims to interoperate their actions.