Three Sets of National Numbers

From AP/Ipsos poll: Dems: Obama 46, Clinton 43. GOP: McCain 53, Huckabee 27. Dates conducted: Feb. 22-24. Error margin: 4.6 points. Read more here.   From CBS/NYT poll: Dems: Obama 54, Clinton 38. Dates conducted Feb. 20-24. Error margin: 5 points. Read more here.   From USA Today/Gallup poll: Dems: Obama 51, Clinton 39. GOP: McCain 61, Huckabee 23. Dates taken: Feb. 21-24. Error margin: 2 points. Read more here.