Pressure groups and movement exert influences on politics in a variety of ways:
1 They try to gain public support and sympathy for their goals and their activities.
eg: This is done by carrying out information campaigns,organizing meetings etc.
2 They often organize activities like strikes or disruption of government programmes.
eg: Tactics in order to force the the government to pay attention to their demands.
3 Business groups often employ professional lobbyists or sponsor expensive advertisement.
eg: commities that that offer advice to the government.