Early polling in Oklahoma consistently showed Clinton and Edwards to be the leaders in the state, and Obama a more distant third. The polling also indicated that other candidates were barely registering. In 2004 Edwards narrowly finished second in Oklahoma behind Wesley Clark by about one thousand votes. Oklahoma had been a key state for John Edwards as he made stops in the state January 15 and 18, over three weeks ahead of the primary date, but Edwards withdrew on January 30, 2008. Former President Bill Clinton stopped at the University of Oklahoma on January 30 to speak at a rally supporting his wife.
Oklahoma sent 47 delegates to the Democratic National Convention. In order to secure pledged delegates, a candidate had to receive at least 15% of the vote. The delegates were broken down into the following categories:
38 pledged delegates, allocated based on the results of the primary:
25 District Level Delegates were allotted proportionally based on the support each candidate received in each congressional district. There were 5 delegates for each congressional district.
8 At-large Delegates were allotted proportionally based on the support each candidate received statewide.
5 party leaders and elected officials ("PLEO Delegates") were allotted proportionally based on the support each candidate received statewide.
9 unpledged superdelegates consisting of PLEOs were not bound by the results of the primary.