David Van with Sooner Politics has a great story on the filing period that ended on Friday. Nearly all of the conservative House members didn't draw a candidate, I think there were 43 of the House and Senate members that drew no opponent. A few previous members like Mike Christian and George Faught are running again.
Conspicuously absent was Rep Chris Kannady's minions. Only one didn't draw a challenger, Josh West, and the blowhard threats against conservatives by Kannady's dark money group simply didn't materialize this year. In fact, the word is that not a single candidate was willing to work with Kannady this time around. The man has become quite toxic, his money has begun drying up, along with his political power since his melt down at the Republican caucus retreat in November.