Electoral reform groups welcome Labour manifesto

I guess this should be titled should we trust them? The pledge to review the electoral process in this country with proportional representation in mind is very interesting. The more votes reflect the actual desires of the electorate the more power the electorate has. I agree in part with Nina when she says:

“Nina Temple, the director of Make Votes Count, said: "The blandness of the commitment is irrelevant - its relevance is that it was there at all.” Link

But I can’t help wonder if there is more to it than that. The Lib Dems under Kennedy have said that they aren’t interested in forming a coalition government with Labour so Labour don’t even have the safety net of bringing in PR and still being power with the Lib Dems in future. Further to this why should we trust Labour at all given its history of deceit and manipulation?