When panel data are not available, retrospective data are used in the estimation of dynamic choice models. However, retrospective data are not reliable. Previous studies of voting choices, for example, have shown that respondents misreport their past choices in order to appear more consistent...

In most democracies, at least two out of any three individuals vote for the same party in sequential elections. This paper presents a model in which vote-persistence is partly due to the dependence of the utility on the previous voting decision. This dependence is termed 'habit formation'. The...