Many of those listed there are themselves associations. For instance, the Canadian Council for International Co-operation has over 100 members in itself, and the Canadian Food Security Policy Group, which is listed there, has 35 in addition. It's difficult to have the exact tally, but there are at least eight or nine major associations such as those, which themselves have many, many members. Then on top of those coalitions, more than 100 individual organizations have endorsed this document, which is now being shared widely through the Make Poverty History campaign.
On October 29th, 2009. See this statement in context.