Tiahrt actually leads among voters who have already voted (46-43).
Democrats:
Filtering: SurveyUSA interviewed 2,600 Kansas adults 07/29/10 through 08/01/10. Of them, 2,234 were registered to vote. Of the registered voters, 837 were determined by SurveyUSA to have already voted or to be likely to vote in the 08/03/10 Republican Primary; 441 were determined by SurveyUSA to have already voted or to be likely to vote in the 08/03/10 Democratic Primary. Advance voting began on 07/15/10.
http://www.surveyusa.com/client/PollReport.aspx?g=ff0c097a-2a4a-4003-9453-7bfbc9fb5634&c=12
