why are some pressure groups more successful then others?

The reasons for why some pressure groups are more successful than others is due to their relationship with the government.  insider pressure groups have a large influence and understanding in policies related to their pressure group campaign. Being an insider pressure group such as the British medical association (BMA). The government may ask them fore their expertise on the ideology which can help the pressure group be influential. 

Insider groups may be more successful than outsider  groups in some ways because outsider groups do not have a strong relationship with the government. The reason outsider groups do not have a relationship with the government is because they normally campaign against something the government are discussing or have cut. An example of an outsider pressure group who do not have a relationship with the government is UK UNCUT.

Another reason to my why some pressure groups are more successful is because of there financial situation and organisation.  Pressure groups can receive money from membership fees and donations. Pressure groups that gain membership fees or donations are usually known to have  a higher success rate as they can spend more money on advertisng, research, campaigning or employing professionals. This can influence public opinion and the government, making the pressure group more successful.

This shows that  certain groups are more successful than others, for example, it shows that good relationships or money help a pressure group in being successful.