The Liberals have absolutely no reason to back electoral reform right now.
It is strange that the future is so often seen as the present projected forwards, when surely our memories ought to tell us that this is absurd.
The past decade gives the Liberals ample reason to back electoral reform: what proportional representation (for instance) would mean above all else would be a degree of protection from the volatile nature of the Canadian electorate. As such over the long run it is their best hope of returning to their traditional status as a semi-permanent party of power...