Like all political entities they are still around but as they become more acceptable in the mainstream they lose their ability to influence a crowd and only become another interested party.
Unable to inspire participation.
So I think no more than any other political money contributor, just another group lurking in the wings.
I can't imagine that people who want fiscal responsibility and to follow the constitution will just go away, although they are a minority.
Hard to say
Does tha want a cuppa lass
it could be going away a little
no. they never really were all that powerful, IMO. It's easy to disrupt legislation. It's a lot harder to actually produce it. They never managed to be anything more than a reaction.