The Republicans do, however, have a point about ACORN and those voter registration drives.
I have dealt with organizations like that for years. They all think they are sacrosanct and entitled to play fast and loose. They see themselves as advocates of the deprived, and they are made up of a combination of idealists, elements of the religious movement, and people like Obama. People who come out of college or law school and don't really need to go out and work, so they do a stint at community service.
ACORN and organizations like it are great places to do a stint like that.
You use your skills and relationships to help them get grants.
In return, groups like ACORN are unabashedly supportive of those who help them - especially with voter registration and get-out-the-vote drives.
H/T Don Surber