As far as i know gambling names works best at fabulous ..how bout other ppc providers like sedo, namedrive, trafficz, domain sponsor, etc.,..care to list out some of it to share..
but I don't know which domain You must have to get this keyword,
I have domain savencardstud and they rejected "poker" keyword and put this under "games" keyword, I think that seven card stud is more related to "poker" then to "games" ...