[mikeash]

I've seen those cards in lots of places, but I'll admit it's far from a complete survey. People love to call home, and there are expats almost everywhere, so I'd expect they'd be available just about everywhere.

As for petitions and such, I imagine that would be much less of a factor now with the rise of social networks and such. But the views of our elected officials may take some time to catch up to that.