https://www.tiktok.com/t/ZTRuqEDhm/A tik tok from an Oklahoma based reporter breaks down the tribes endorsements (albeit from a very left view).
Stitt has been very aggressive with the tribes, which recently have become some deeply red parts of the state, while also being willing to vote for democrats. There were still three democratic state representatives in the eastern part of the state as recently as 2018.
Also don’t forget in 2018 Drew Edmondson was able to draw attention to the state, as well as the stunning flip by Kendra Horn. It seems that Oklahoma has a much more elastic nature then one (me included) would have suspected.