Tom Daschle did a lot for the state of South Dakota by working hard in DC and spending his campaign time in the state attending all levels of rallies, not just the big ones. He made connections with voters young and old, of all races, and had incredible support from Republican voters in the state. Then he was put in the role of the Senate's voice for the Democrats to oppose Dubya Bush policies. Every conservative radio talk head made him a point of attack, as did early Fox News, and potential voters ate it up. When he ran next, he avoided the smaller rallies, running on his record...and he was defeated. At one time within the last 20 years, South Dakota had three Democrats in DC, so getting the state to vote for a Democrat that takes the time to invest in voters is not unheard of, but lacking a candidate that does that, the state will always end up voting Republican, and it seems very few Congressional, Governor, or Presidential candidates have taken time to engage voters, which will always lead to the default Republican vote.