I didn’t know that James Lankford was a liberal. His voting record doesn’t bear that out. I’m inclined to support T.W. Shannon, but if Lankford wins, it’s not the end of the world.
This post sets forth the main objections to Lankford’s Senate candidacy from conservative groups (all based on his votes and on one public statement):
http://www.freerepublic.com/focus/f-news/3114183/posts?page=17#17
Obviously he’s no Dede Scozzafava, but neither is he as conservative as Speaker Shannon (or as Congressman Bridenstine).