I read that Santorum did try, but came up short, so he didn’t submit. Someone on a thread said he had about 9000 signatures.
I don’t remember Huntsman doing anything, but putting him on the ballot is a small price to pay to get our conservatives on the ballot.
There are real problems ahead for Santorum and Gingrich because they have failed to establish good on the ground grassroots organizations to get out the vote. Debating may win points in the polls, but getting people to the voting booths wins elections. I don't see Gingrich winning in VA even if he gets on the ballot. I am no fan of Ron Paul, but he has built a very effective grassroots organization here in VA. Unfortunately, he will do well the primary, which is open.