Did you see the Primary Election Voters Guide?

Tolerant was the best word we came up with.
The word "liberal" is just too loaded, though we considered it.

"Responsible" conveyed the meaning, "Conservative"
was also too loaded.

But, all good thoughts.
Keep the ideas coming!!!

In that case, how about:
"If you describe yourself as in favor of social and economic freedom, you're a Libertarian!"

-- Steve