Past research has consistently found that American Indians have traditionally turned out to vote at lower rates than do other citizens. Using two separate data sets, we examine this "turnout gap" over the past several decades. We find that not only has Native American turnout increased generally, but that the "gap" between Native Americans and non-Native Americans has declined substantially, and that in recent elections this "gap" has largely disappeared. We then provide a preliminary and tentative examination of possible causes for the decline, including the role of Indian gaming, mobilization by political parties and candidates, and shifting political values among Native Americans.