If Gingrich really drops out after IL or LA, and endorses Santorum, maybe he could even convince Sheldon Adelson to write a 50 Mio. $ check for Santorum for the ultimate battles in NC/IN/WV and then later TX and CA. This would badly damage the Romney money machine (unless he writes himself a check for 50 Mio. $).
Adelson HATES Santorum...
Equally, if these numbers are in fact correct... and they look reasonable, Romney should be worried about Santorum's underpolling in TN, MS and AL.
Probably a southern phenomenon.