In America’s “two party system,” Republicans and Democrats, aka, the major parties, usually don’t appreciate the so-called third parties, aka, the minor parties. About as popular as a skunk at a summer picnic, third parties as a group are viewed by the majors as impudent upstarts, somewhat unsavory, and unwanted potential adversaries. But the real aim of the Santorum campaign is to siphon off liberal Democrats from US Senate candidate Bob Casey, unhappy Democrats who want a pro-choice and an anti Iraq War candidate to support.