Newt should hammer on Romneycare/Obamacare and the consequence of the loss of freedom including religious freedom as being suggested by Russ today.
We need 3-way tie on delegates or denying Romney the 51% majority to force brokered convention at which Newt will get nomination locked up as he will shine like a star.
I hope Newt should not try to peel votes or delegates from Santorum but to find the way to get it from Romney who must lose badly from the southern states as the rest mostly eastern states which are more liberal therefore will go to Romney and these states have winner-take-all.
He can't be too happy about the way the electoral map looks now: