Library of Parliament Research Publications

The Library of Parliament in Ottawa regularly publishes research publications on a range of topics.

I find they are often a good starting point for background information, as the Library explains:

"The Library of Parliament offers its parliamentary clients a range of research publications on current and emerging issues, on legislation and on major policy topics. These research publications provide timely and authoritative information and analysis on issues of relevance to the work of parliamentary committees and associations, and to parliamentarians in their constituencies."

For example, I was recently looking at their October 2019 document on the distribution of legislative powers under the Canadian Constitution.

It is possible to get news about new publications via an RSS feed or on Twitter.