Public choice theory suggests that government redistribution is likely to most help:
the truly needy.
the working poor.
the organized and articulate.
Groups with a common interest find it:
easy to organize because they have do have a common interest.
easy to organize if their common interest is to obtain favors from the government.
hard to organize because they usually face a free-rider problem.
hard to organize if the group is small, but easy to organize if the group is large.