http://www.freerepublic.com/focus/f-news/2815398/posts
You are oh, so wrong again. The ACU also rates members of Congress annually. in 1998, Newt Gingrich recieved a 100% rating. Newt later recieved the 90% lifetime after being out of Congress and having aligned himself with lesser pursuits.
It rates them annually while they are in Congress, and the ratings are based purely on how they vote. Here’s a link showing Newt had a lifetime rating of 90 after his last year in Congress, 1998: http://www.conservative.org/ratings/ratingsarchive/1998/98houseratings.htm
The 100 rating was for just the year of 1998. In the previous year, 1997, Newt received a 75.