bszobody@greenvilleonline.com While the rest of the Republican presidential hopefuls feint and calculate, former Pennsylvania Sen. Rick Santorum and his family are hop-scotching the state, winning straw polls, standing ovations and some activist loyalty. At a Republican women's luncheon in Greenville last week, Karen Santorum and her daughter showed up, drawing audible murmurs of approval for her resume as an attorney and nurse and then a standing ovation as she spoke in emotional terms about her family's struggle with a seventh child who has a birth defect.