Ineligible for over 20% of the delegates of a very delegate rich state...I believe about 75.
The ultimate issue is Obamacare and Rick is the only one (not counting The Nut) who has standing in it's opposition.
The main unconstitutional outrage in Obamacare is the individual mandate—an outrage Mitt Romney invented and Newt Gingrich supported.
Rick Santorum has no such weakness—a weakness Obama’s billion will inflate for both Mitt and Newt into cynical hypocrisy.
I like Newt but he can't get past Romney much less Obama—a vote for him is at best, a vote for a noble lost cause.
But by all means vote for your chosen candidate—just be ready for the “I told you so’s” from we Santorum supporters in the end.