These are things he's volunteered. He is an interesting (buy shielded) man to talk to.
I don't know Frank Miller's politics. Maybe Libertarian, maybe something different altogether (pick one from column a, one from column b...). He doesn't seem like an out and out Liberal to me. The Comics Journal just published a retrospective of interviews they conducted with him from 1980-2003. I think it is about a $20 book. His next project is supposed to be about Jesus but he hasn't indictated just what he plans to do with it (what angle he is taking).
I hear that Steve Ditko is into Ayn Rand. He is very private in that he wants his work to stand on its own (although he has put politics into his strips). He is quite "camera shy" and doesn't make personal appearances (but he is still alive and was creating through the 1990s).
I found this excerpt from a longer interview with John Romita Sr.:
Q : Who did Steve Ditko originally want the Goblin to be?JOHN : From what I've gathered - and this is secondhand information, because I never asked Steve this - he wanted it to be someone unknown. And his theory was sensible; this is the reason Stan and he disagreed a lot. Ditko had a feeling that more real life should be put into the strips, and I thought he was a pioneer that way. He wanted politics in the strip, he wanted sociological upheaval in the strip; that's why there were riots on the campus in the strip and all that stuff. He was a very political animal, and he was very conservative too, as you probably know. He wanted all this stuff to look real, and he said, ''In real life, if there's a masked criminal, and you unmask him, 99 times out of 100 it's going to be someone you never know.'' And Stan's like, ''What are you talking about? We're not doing real life here; this is a guy who crawls on walls.'' (laughter)
I think that Dave Sim (of Cerebus) has some conservative positions but as a Canadian, I don't know all of his positions. More of that is my fault, I don't buy his self-published comics, I buy the self-published collected volumes. The individual issues have lengthy essays/editorials.
Here is a lengthy gripe from someone who dislikes Sim and Ditko's politics: Cerebus the Aardvark: An Obituary