The OK seat has only voted heavily Republican for national elections not for local elections. We kept getting closer with this seat and now we have won it!
I thought that since Canadian County (which is as rock-ribbed Republican a county as there is in OK) is in the district that it had a strong GOP lean to it even in state races, but I see that only a portion of Canadian is in the district. Based on the 1992 and 1996 presidential elction results (Clinton ran very well in parts of OK that still tend to vote Dem in state races), I would guess that Washita County (all of which is in the district) is a bit of a swing county in state races, while I would guess that the other two counties partially in the district (Caddo and Kiowa) are pretty strongly Democrat in state races.