From SUSA. Some interesting states. Link below.
Montana: approve 40%, disapprove 55%, net approval -15%
South Dakota: approve 41%, disapprove 56%, net approval -15%
Colorado: approve 36%, disapprove 62%, net approval -26%
New Mexico: approve 35%, disapprove 61%, net approval -26%
Nevada: approve 34%, disapprove 65%, net approval -31%
http://www.surveyusa.com/50State2006/06041850StatePOTUSNet.html