The Liberals are expected to select the fall of 2013 as the date to elect a new leader to replace Jon Gerrard, who announced his intention to resign after last fall's election.
The election saw the party reduced to just one legislature seat — Gerrard's — and prompted Gerrard and some other Liberals to talk about a possible merger with the seatless Green Party.
But earlier this year, Liberal directors quashed the idea of a merger and suspended two board members who had revealed internal discussions about the idea.
A resolution to be debated this weekend calls for the Liberals and Greens to work co-operatively on some topics.
The resolution also calls for a plebiscite on the merger idea, because it has not been put to grassroots members so far.