The vote for wagering on sports in California is approaching quickly. And sports betting opposition is on the rise from a coalition of mayors in the state. More specifically, they oppose what they seem to view as gambling expansion in the form of a sports betting proposition which would enable sports betting outside of tribal casinos. The coalition of mayors from various towns and cities in California came out in opposition of Proposition 27. That’s the ballot measure supported by commercial gaming interests that would allow sports wagering across the state on a mobile devices. In fact, the mayor of…