 However, with 8.6% Native Americans in the state, most Native American precincts vote Democratic in margins exceeded only by African Americans.Until 1964, Oklahoma was considered a "swing state" in American politics, shifting back and forth in its support for the two major parties.This was in part due to Oklahoma's situation both as a part of the Great Plains states, which tended to be reliably Republican, and the South, which was heavily Democratic at that time.