Surveys located
I have located at least two good surveys from the 2004 election. One is a CBS/NYT poll from March 10-14, 2004. The other is a Pew Research Center survey from June 17, 2004. Both of these have a portion devoted to asking respondents about particular issues and their importance. While they aren't exactly the same, most of the issues duplicate on both polls (which I consider a really good thing). If you want, I can copy out the results and e-mail them to you. The fact that the issues are almost the same and ranked in a similar order PLUS these are from two different time frames makes me think that we can use these to identify our party ideology. There are probably other surveys out there, but I'm inclined to say these are good enough for me. (Am I getting lazy, or am I just too concerned about time?????)
