Some time ago, I came to the conclusion that politicians on the national level are amoral at best. In that vein, think about this.
What does it say about Rick Santorum that he would ask Democrats, in an open primary state, to cast votes in the Republican primary race to vote for him? What does it say about Santorum that he would claim to be THE conservative in the race, yet has for Democrats, liberals, to vote for him in the Republican primary?
I think this shows some of Santorum's character and what is being shown is not a good think, IMO.