powerful, strong
a powerful anti-smoking lobby

mass | anti-abortion, anti-hunt, environmental, industrial, nuclear, political, etc.

mount, organize

group

~ against
Many groups have together mounted a lobby against cuts in hospitals.

~ for
Villagers have organized a lobby for improved local facilities.

actively, hard | successfully

against
Head teachers have been lobbying hard against education cuts.

for
The group successfully lobbied for changes in the law.

on behalf of
The organization has been set up to lobby the government on behalf of all the people who have lost their pensions.

intense/intensive lobbying
The decision followed months of intense lobbying of UN officials.

political lobbying
The group achieved its aims after months of political lobbying.