Newt and Rick have to start performing better than they have been across the board to give both of them enough delegates to merge into a majority at the convention. And I mean according to type of state. They have shrink the percentage Mitt's been getting in the south, northeast, west, etc. Maybe just by a handful, but it has to be done, and they certainly can't let Mitt increase his percentage takes.
1) Unlikeable person WOMEN actually vote for him more than men.
Uh, what are you smoking? Have you looked at the poll results? Women never vote for a conservative more than men do. Romney gets the women vote advantage, but Newt and Rick don't.
http://www.freerepublic.com/focus/f-news/2856419/posts
The above link contains a graph in the first post showing the vote for Santorum by gender, in case you are interested.