When I say "centrism", I'm thinking of it only as it relates to American politics with no external input. Comparing to other countries would be interesting, but

When I say "centrism", I'm thinking of it only as it relates to American politics with no external input. Comparing to other countries would be interesting, but I wouldn't even attempt it. Too many variations, even if limited to western nations. Your example of Spain shows the Democrats would comparatively be on the left on some issues, and on the right on others. Which, amusingly, would average out to centrism of a sort.