@sbjohnsrpi
I think that's true. When I think left VS right I think of centralized VS non centralized (federated?) power. But I suspect most would respond thinking that one end of the spectrum is democrats who are unlike Republicans and on the other end Republicans who are unlike democrats.

Ie., being more or less like Bernie Sanders could mean very different things to different people.

that's not an ideological definition, but still informative in some way.