but on their ideas, on what they stand for. reporter: this as the latest cnn/orc poll shows trump and carson losing momentum with voters after the cnn debate. trump still is front runner but his lead is slipping, as carly fiorina rises 12 percentage points. how muany of you saw the debate on wednesday night? reporter: over half of poll respondents who watched cnn s debate think fiorina did the best job. marco rubio taking home second place, far better than his former mentor, jeb bush. i think carly had a good night but i think you gave her a lot of easy questions. reporter: trump zeroing in on the post-debate star, attacking fiorina s record as ceo once again sunday, tweeting she did such a horrible job at hp, that she never got another ceo job offer. the political front runner saying carly fiorina cannot become the republican nominee.