Explain in three ways how pressure groups help improve democracy

One way in which pressure groups help improve democracy is by giving minorities a chance to air opinions important to them which may get lost by political parties who are tying to please the majority of the electorate. For example the justice for Gurkhas pressure group allowed Gurkhas to air their opinion on how they felt unfairly treated after their service.
Another way in which pressure groups help to improve democracy is by increasing political participation. This is because the majority of the electorate do not fully assign themselves to a party due to the vast policies they have, however, some in