J. K. Rowling
Rowling is firmly liberal in her politics, and despite being from the UK, has supported both Hillary Clinton and Obama, stating "I want a Democrat in the White House. And it seems a pity that Clinton and Obama are rivals because both are extraordinary."  Her books were written while she was a divorced single mother, living on welfare benefits provided by the government, while she worked the minimum necessary to maintain her benefits.  Rowling also worked for the Pro-Choice, Pro-Gay, Anti-Israel Human "Rights" organization Amnesty International,  and donated 1 million pounds (1.6 million dollars) to the No campaign when Scotland was thinking about leaving the UK. 
- "J. K. Rowling Biography", biography.com
- J. K. Rowling Official Site, "Biography"
- "The Fringe Benefits of Failure, and the Importance of Imagination", Harvard Magazine, June 5, 2008