Two things!
1. One of them never claimed to be and the other has!
2. I could care less what they claim to be! I much prefer to judge them on what they PROVE to be!
And what authority do you possess to determine just who is and who is not "conservative"? Neoconservatives, social conservatives, paleo-conservatives, economic conservatives, national security conservatives and libertarians have all claimed the label. Conservatives have backed the flat income tax espoused by Steve Forbes or the Fair Tax that creams your jeans. Conservatives have supported marriage equality on the basis of the 14th amendment and rejected it on the basis of words in a 2,000-year old book.
What's the point of casting good folks outside the tent? It seems we need all the conservatives we can get to win elections and influence the course of events.