One study concluded: "While the margin of victory [for Johnson] was a mere 524 votes, getting into that winning position required a number of important factors, including Native American turnout, the ability of Johnson and his allies to more effectively use the ground war to get their message out, Thune's ineffectiveness on the air and lack of experience in winning competitive elections, low voter turnout in key Republican counties, the drought, and finally the presence of Kurt Evans. Evans, a Libertarian candidate who withdrew from the race, endorsed Thune, but remained on the ballot and siphoned away more votes from Thune than Johnson. Evans received only 3,070 votes, but that ended up being six times greater than the margin of victory."