You can’t turn on your television set or click on a YouTube video these days without being subjected to a barrage of ads for and against California ballot measures that would legalize betting on sports events.

Virtually all of those spots feature members of California’s Native American tribes. Most tribes oppose Proposition 27, an on-line gambling measure sponsored mostly by FanDuel and other gaming corporations, saying it would undermine the finances of casino-owning tribes. However, a few tribes that don’t have casinos are touting Proposition 27, saying its provisions would help them escape poverty.

No matter what happens to Proposition 27, or to Proposition 26, which is sponsored by casino-owning tribes and would expand their virtual monopoly on gambling, the intense campaigns remind Californians of their state’s very large Native American population.