Conservatives. Although some will argue there were 4.
TO get “3”, you can either reject Huckabee or Romney as not conservative, or you can reject Hunter as not a real candidate.
The point is we never had that one single conservative candidate that all the conservatives could rally behind. If we had, we could have beat McCain, who wasn’t getting 50% of the vote but was winning because the conservative vote was split between the 3 or 4 conservative candidates.