From Rasmussen Reports: South Dakota, Survey of 500 Likely Voters, Conducted September 27, 2004:
Thune 50% Daschle 46%
Daschle: Favorable 52%, Unfavorable 46%
Thune: Favorable 58%, Unfavorable 37%
UPDATE: Instapundit and Powerline are taking interest in this new poll. For those readers who want to know a bit more about why Daschle is losing--i.e. the chickens coming home to roost from all his contradictory positions--see this article I did for NRO. I think the chickens-coming-home-to-roost theory has some merit, but there are certainly other reasons too. Read below for more reasons.