Caffeinated Thoughts has learned that Herman Cain lost yet another Iowa staffer. Charlie Gruschow, former leader of the Des Moines Tea Party, resigned from the campaign on Sunday “to pursue other interests.” Gruschow had been an early supporter and activist for Cain having been with him since last year even though he was only on the payroll since May. This is the third Iowa staffer that Cain has lost over the holiday weekend. Tina Goff, Cain’s Iowa State Director, and Kevin Hall, his Ames Straw Poll Coordinator, resigned amidst frustration that Cain is not making a serious effort in Iowa....