In my opinion, The people screaming for Santorum to get out of the race aren’t considering the states where Romney is strong. These are the states where Santorum is likely to pull more votes from Romney than from Gingrich.
Why should Santorum get out? Why does Iowa, NH and SC decide the nominee for republicans nationwide?
The one that needs to get out is Ron Paul. How many primary elections has he won? None, zero, zilch. Santorum, Romney and Gingrich each have won a caucus or primary election