Gaddie noted that nearly 54 percent of those polled after voting on Tuesday were identified as white evangelicals.
"Those folks are just very conservative,” he said. "They made up their minds early.”
He noted that Obama got more of the white vote in Oklahoma than in states like Alabama and Louisiana and said McCain’s margin of victory was not about race.
"It is a deeply ingrained social identity that is disproportionately present in Oklahoma,” he said.
U.S. Rep. Tom Cole, R-Moore, who has held key political positions at the state and national levels, said the results were "not racial at all.”
Cole said former U.S. Rep. J.C. Watts, a black Republican, had won statewide office (as a corporation commissioner) before enjoying large margins of victory in his congressional races.
He said McCain, a veteran viewed by some as a maverick, had "unique appeal” in Oklahoma, while Obama was viewed as liberal and inexperienced.
"Oklahoma is clearly trending very Republican,” Cole said. "Liberal national Democrats are not where we’re going to go.”
U.S. Rep. Dan Boren, D-Muskogee, who avoided making a public endorsement of Obama, called his victory "historic” on Wednesday and said, "You have to take great pride in the fact that the color barrier has been broken for the highest office in the land — the world, really.”
Boren’s district, though heavily Democratic, went overwhelmingly for McCain at the polls. Boren said the results of Tuesday’s race "came as no surprise to me.”
Oklahoma’s Congress members say they hope Barack Obama will "govern from the center.”