Mark Elam, who has written more than a few polls for Rep. Ron Paul, wrote in a comment to my original post:
I was polled in this survey and identified myself as conservative and Republican and was NOT asked who I would vote for in the primary...only in the general. Something is very suspicious about the whole thing. And yes, in doing a truly scientific survey, you would not identify the other candidates as "former congressman." That skews the results by giving the respondent information they might not otherwise have and by giving DeLay's opponents pretigious titles.