Here is the 2013 list of 50 states + D.C. ranked by least to most conservative advantage (3 states + D.C. have a liberal advantage):
1. Washington D.C.: -16.5%
2. Vermont: -5.6%
3. Massachusetts: -2.8%
4. Hawaii: -0.7%
5. New York: 1.1%
6. Connecticut: 1.3%
7. Delaware: 3%
8. New Jersey: 3.1%
9. California: 3.7%
10. Maine: 5.3%
11. Oregon: 5.7%
12. Maryland: 6.5%
13. Illinois: 7.4%
14. Washington: 8%
15. Rhode Island: 10%
16. Nevada: 11.5%
17. New Hampshire: 11.9%
18. Colorado: 12%
19. New Mexico: 12.9%
19. Michigan: 12.9%
19. Minnesota: 12.9%
22. Arizona: 14.4%
23. Pennsylvania: 15.2%
24. Florida: 15.9%
25. Virginia: 16.1%
26. Ohio: 18%
27. Wisconsin: 18.6%
28. Iowa: 20.3%
29. North Carolina: 21%
29. Nebraska: 21%
31. Texas: 21.7%
31. Kansas: 21.7%
33. Alaska: 22.5%
34. Kentucky: 22.8%
35. Indiana: 23.3%
36. West Virginia: 23.5%
37. Georgia: 23.6%
38. Missouri: 23.9%
39. Montana: 26.4%
40. South Dakota: 26.7%
41. Oklahoma: 27.8%
42. South Carolina: 28%
43. North Dakota: 28.1%
44. Tennessee: 28.3%
45. Alabama: 28.7%
46. Arkansas: 29.1%
47. Louisiana: 29.4%
48. Utah: 31.3%
49. Idaho: 32.8%
50. Mississippi: 33.1%
51. Wyoming: 40.5%
Tomorrow I will publish the 2008-2013 changes, as I'm too tired to do it right now.
I'll also work out a conservative-liberal map anno 2013.
Here's the relevant Gallup article:
http://www.gallup.com/poll/167144/wyoming-residents-conservative-liberal.aspx