There are a number of projects around the world aimed at opening up the legislative process through creative re-use of the records produced by parliaments, congresses etc. It is worth looking at some of these power of information exemplars.
UK – TheyWorkForYou.com
US – OpenCongress.org
EU – IPPR-MEP.eu (How MEPs Work)
Australia – OpenAustralia.org
There are some interesting lessons to take away from the approaches taken by each project to sourcing, mixing and presenting data.