During the presidential election there was the extensive use of rhetoric about strict father figures and nurturing mother figures in the persona of Bush and Kerry.
Here is an article that proposes that there should be an emphasis on community for progressives to appeal to voters in upcoming elections. It argues that the parent analogy assumes that people are subservient to authority and allow others to make decisions for them. Since progressives offer a new vision, they must use a new language to frame their proposals and outlook.