Newport Beach in conservative Orange County CA has banned Polystyrene (Styrofoam). Adjacent Huntington Beach is studying a similar ban.
Huntington Beach recently instituted a charge of 10 cents for stores to give plastic bags. Customers are expected to bring their own bags, presumably environmentally friendly bags.
These two cities account for nearly half the coastline of densely populated Orange County. The ocean is highly valued as a source of natural beauty, tourism, the climate, etc. Therefore keep it clean.
Keeping non-biodegradable materials out of the daily stream of trash, is popular with liberals and conservatives in California.
Conservation and conservative have the same root word: conserve
"Don't kill (or catch) more than you can eat," "leave the campground cleaner than you found it" are the types of phrases I learned from my Western, conservative parents.