The numbers:

Romney
7-9 Feb 11
48% Obama
41% Romney

Huckabee
7-9 Feb 11
49% Obama
41% Huckabee

Palin
7-9 Feb 11
56% Obama
35% Palin

Gingrich
7-9 Feb 11
55% Obama
35% Gingrich

Jeb Bush
7-9 Feb 11
54% Obama
34% Bush