According to Gallup’s latest positive-intensity survey among Republicans and independents, Newt Gingrich … doesn’t have much. Calculated from the difference between strongly positive and strongly negative responses, Gingrich fell to his lowest level of the spring at 6 points, down from a peak of 19. Gingrich now trails almost the entire GOP field in this measure: Former Speaker of the House Newt Gingrich’s Positive Intensity Score dropped to 6 in the two weeks spanning May 16-29, down from 11 for May 9-22. Gingrich’s current Positive Intensity Score is his lowest to date, off from a score as high as 19...