Conservative Review has ranked members of Congress on their conservatism. Rep. Dave Brat (VA7) and Rep. Tom Garrett (VA5) are both ranked number 1 with 100% A ratings. Brat and Garret are among only 6 of the 535 members of Congress to have received 100% ratings. See the rankings here.
Conservative Review has also ranked the top 25 RINOs (Republican in name only) with Susan Collins of Maine in first place followed by Lisa Murkowski of Alaska. See the RINO rankings here.