[vidarh]

A lot of people who wanted PR saw the Alternative Vote referendum as a poison pill and voted against it. It's one of the reasons support for the Lib Dems subsequently crashed, as they were seen to have fundamentally sold out.

In any case, a referendum on whether to keep a fundamentally undemocratic electoral system is in itself undemocratic - there is no legitimate case for keeping an electoral system that effectively disenfranchises a substantial proportion of the electorate.