Because demands on them are few, rubber stamp legislatures need little internal structure or expert staff and need not conduct long legislative sessions.  The Duma of the former Soviet Union and the Mexican Congress during the decades of PRI dominance could be considered rubber stamp legislatures.  “Rubber stamp” generally connotes non-democratic, but it could also describe components  of the election process such as the US Electoral College, whose delegates are expected to vote according to the dictates of those who sent them, and not according to personal opinion.  Because rubber stamp legislatures do communicate extensively with citizens, do not process great quantities of information, do not hold public hearings, and do not amend laws and budgets, their resource requirements are few and they are generally the least expensive legislatures to operate.