I have doubts too. I wonder if this info is confirmed. Anyway, I would be stunned if Joan Allen were really a Repub as she was in that vile "Nixon" movie, and that other left leaning film where she planed the first woman VP. Gary Oldman complained that he did not know the movie was going to be edited to make conservatives look so bad.
My flat-mate just bought a copy of that film, but I haven't seen it yet. As a young Brit, I know very little about the Watergate affair, and I had hoped that it would be a useful starting point. I guess not, no?