Well then, if he wants the nomination, he better damn well state he is not anti 2nd Amendment, not pro-abortion and not pro gay marriage. Now how hard is that? If he does not do this soon, he is not going anywhere. Simple.
He's said he's an originalist on the constitution, his favorite justice is Scalia, and the appointments of Roberts and Aliton were excellent, a promise kept to the American people by Republicans.
On a practical basis, that's all anyone could ask for. Check the answers both Roberts and Alito gave on Roe v Wade, "settled law" etc., from ultra conservative appointees.
http://www.solutionsamerica.com/News/DocumentSingle.aspx?DocumentID=18987