After Mark Sanford’s win, embarrassed pollsters go back to the drawing board

Mark Sanford is heading off to Washington DC, while pollsters are heading back to their workshops. His victory by 9pt over Elizabeth Colbert Busch in South Carolina’s first district special election was surprisingly large. The last two public polls from Public Policy Polling (PPP) and Red Racing Horses (RRH) had Sanford winning by 1pt and a tie, respectively. PPP published a poll just two weeks before the election that had Colbert Busch winning by 9pt. [cont.]

Harry Enten, The Guardian