Hence why the party platform being "We support a living wage for all Americans" provides a sellable statement that candidates can unify around without the Manchins of the world saying "Well, golly gee that $15/hr thing just won't work in West Virginia". Well, no problem Joe! We got you covered since I'm sure you want your constituents to be able to afford to live without sucking on the government teet, right?
Not to mention, it provides a nice bridge for a possible evolution into the introduction of a UBI if the country shifts enough in that direction.