Yes, for american standards Sanders is certainly a radical. However, I think the USA really need some radical changes, even before Trump came to power, but even more after that.
But I do agree that Sanders is too old to start that. And from the other candidates I don't expect more than "business as usual". No matter what party they are from.

So Buttigieg is a maltese name? Well, that explains a lot. You don't see many of them around anywhere. I think there are not many of them - even in Malta. :)