Have you not seen the opposition to the governor's existing water plans (for new infrastructure bonds and so on)? Inland California is conservative, and happy to blame liberal coastal elites for the problem even though most of the water is used in the Central Valley. And yet, agricultural lobbyists are really that powerful. Even though farming is only about 2-3% of the state's GDP, the farming lobby is crazy militant. Also, right-leaning politicians love to stoke conflict between rural and urban-dwellers, as it translates into more rural votes at election time.