How far does the evidence support influence over committee membership — the extent of Parliament's influence on government decisions, including party discipline, Select Committee access to civil servants and Whips' influence over committee membership? Use the relevant political concepts and evidence from The structure and role of Parliament.

Reject the misconception that pressure groups and political parties perform the same representative function; keep government, Parliament, legislature and executive distinct and explain why the difference matters. This is correct because accurate Politics answers reject the misconception that pressure groups and political parties perform the same representative function.

Apply insider access, outsider campaigning, lobbying, consultation, congressional committees, litigation and campaign finance precisely. UK pressure groups often target ministers, Parliament and consultation, whereas US groups also use Congress, federal courts and campaign finance routes.

A structural viewpoint emphasises formal rules; however, a rational or cultural viewpoint may explain how actors use those rules. Overall, judge the evidence from a named campaign, consultation, court case, congressional hearing or lobbying route and explain whether institutional access changes which lobbying method is effective for "Analyse and evaluate the extent of Parliament's influence on government decisions, including party discipline, Select Committee access to civil servants and Whips' influence over committee membership.".