Well, all things being equal, the voting Democgraphics that have favored Santorum and Gingrich are heavily present in PR:
(1) Males
(2) Evangelical/Religious
(3) Conservative/Somewhat Conservative
(4) Total Income Less than 100K
However, PR has had a history of voting for the establishment candidate (they voted Bush over Reagan in 80 and Clinton over Obama in 08).
Projections I had for every 100,000 in the 5 District Total are the following. However, because of the tendency for specific voting blocks to vote in “groups”, I am either totally on the mark (or totally wrong).
Romney (63,000-67,000) 63-67%
Santorum (21,000-24,000) 21-24%
Gingrich (7,000-11,000) 7-11%
Paul (1,000-3,000) 1-3%
Whoever wins, it’s probably by a majority and big.
I think that your predictions are right on the money, and this is coming from a Santorum delegate in PR. PR didn’t just vote for the establishment choice GW Bush in 2000, it gave him 94%!