Wel, I am sorry to disappoint you, I normally only speak for myself and if I am speaking on behalf of other people I make it clear I am doing so. But for what it is worth....

I suspect if pressed that the original people who started enjoying folk songs around the time of (let's call it for now) the revival tended to be of the left.

Why? Well some came to it like I did through protest songs and political activism. There are those who still do. Some came to it through American music like the Weavers and later Dylan and that tended to be anti-war and therefore left.

The dance side was simply people who enjoyed dancing and tended to be a more disparate group. Some of the former joined some of the latter as I did, in my experience few of the latter joined the former,if you see what I mean.

Nowadays I reckon it is much wider politically and not so easy to make assumptions as it used to be - but liberal rather than conservative.

The younger ones who go to summer schools and play in sessions and in my experience are well into a pretty wild ceilidh scene, seem apolitical.

But very generalised and based a bit nowadays on incomplete knowledge.

HTH