Neither Santorum or Gingrich are on the ballot in VA, which is part of Super Tuesday. Newt wasn’t on the ballot in Missouri. Santorum isn’t on the ballot in DC.
Yes Newt missed the VA primary. However Newt will be in the Missouri caucus on Mar 17.
VA is the only state I have heard that Newt had problems with. Him and Rick perry had a couple thousands votes rejected.
Santorum is hoping to use Rick Perry Delegates in Tenn. Also in one Tenn. CD3 Santorum may have to borrow Newt Delegate if Newt does not win that CD.
http://tennesseeticket.com/2012/02/27/how-to-pick-delegates-for-santorum-in-tennessee/