Oklahoma Democratic primary , 2008 , part of the process of selecting that party 's nominee for President of the United States , took place on February 5 , one of the many nominating contests of 2008 's " Super Tuesday " . The primary election chose 38 pledged delegates to represent Oklahoma at the 2008 Democratic National Convention . The remainder of Oklahoma 's 47 delegates consisted of unpledged superdelegates not bound by the results of the primary . The election was a closed primary , meaning that only registered Democrats could vote in this election . Hillary Clinton won the primary by a significant margin
2008 Democratic National Convention
2008 Democratic National Convention
2008 Oklahoma Democratic primary