Some of the stuff it's done since 1997 is good, and you can look back further than that and see a good party. Brown is in some ways representative of modern Labour - he started out left, and was seduced by Blair's Third Way.
I'm Lib Dem, myself, but there can be a certain amount of tension between traditional Labour - basically union-based, and the Lib Dems, who are more 'middle class'. Here's quite a good blog on the divide in the left:
It is very dangerous to make assumptions about anyone in this modern kaleidoscopic world. But I’m going to stick my neck out and guess that Gillian Duffy doesn’t read the Guardian. Apologies to Mrs Duffy in advance if I’ve got it wrong. If I’m right then she would be utterly perplexed by its leader this morning. The problem for the left now is that it is not just split between two parties. It is split between two worlds. One is the Guardian’s world- professional, comfortable in many ways, idealistic, individualistic, convulsive, rational, modern, and, yes, elitist. The other is Mrs Duffy’s- traditional, precarious, in search of security and certainty, emotional, nostalgic, rooted, and plain-spoken.
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http://www.anthonypainter.co.uk/2010/05/01/mrs-duffy-and-the-liberal-moment/