Public choice theory suggests that government redistribution is likely to most help:
the truly needy. the working poor. everyone equally. 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.