As I like to mention every now and then, the Democratic party in Oklahoma is an absolute joke. To see this, look no farther than the party's two most recognizable leaders – David Boren and Mike Turpin.
These two wealthy members of the Oklahoma ruling class are about as establishment as you get. They use their power and influence to serve the energy industry first, personal interests second, and if they ever get down that far, the people third.
If you need proof, just look at how David Boren tried to use his influence to distance the energy industry's involvement in the man-made earthquake crisis, or how he endorsed raising the taxes of working Oklahomans to pay for teacher pay raises. If that doesn't do the trick, you can also read this editorial by Mike Turpen that endorses Trump's appointment of Scott Pruitt to the EPA.