Kim Krause Berg on the CRE8PC on usability & holistic SEO blog asks if its safe to mix politics with blogs and forums. She gives her views and experiences and her thoughts about how others in the SEO industry handle the issue through her analysis of their content.
I think you will find Kim’s round-up of the industry, and Kim's opinions on the topic a very enjoyable read.
I was also thinking that when people talk about politics they probably usually think about partisan politics rather than issues. I think most business people will try to avoid partisanship, though not all. But to me it’s quite legitimate for a corporate blogger to include postings on issues and sometimes politics, especially if the psychographics of your audience are such that they have political leanings one way, or the other and lets not forget independent.