Pressure Groups | Definition, Features, Functions, Pros & Cons There are several groups in the political system which attempt to influence the political process. Apart from political parties, pressure groups are also important in this respect. The study of pressure groups has its origin in the “group theory" of politics....

The difference between representative government and responsible governments depends on the nature of the legislature and the relationship between it and the executive. If the legislature is elected by the people, the system of government is representative and this is the ordinary system in all democracies, except in one-party states. In one party states where there is only one officially-recognized political party, there is no real choice between candidates and programmes.