I just read an article by Bruce Byfield at linux.com that the Green Party of Canada is the first to include support for FOSS in their election platform. Here is a quote from Bruce's piece:
"Thanks to a founding member of Free Geek Vancouver, the Green Party of Canada has quietly become the first major political party in Canada to make support for free and open source software (FOSS) part of its election platform. Like officials in the Green Party of England and Wales, deputy leader Adriane Carr sees the move as compatible with basic Green ideas, but IT consultant Neil Adair also points out the move serves the practical purpose of helping the party match the technical resources of more established parties."
The full article is also available.