Everyone is focussing on the PM's votes dilemma, says Simon Barrow, but all the parties are suffering from the diminution and regionalisation of their support as people continue to be disillusioned with the system.

Liberal Democrat MP Sarah Tether has secured a House of Commons debate on the impact of the proposed National DNA Database, which takes place today. It has been welcomed by human rights, mental health and church groups.

Westminster easily gets mired in posturing and trading for influence, says Simon Barrow. But there are glimmers of redemption and genuine conviction in the political vocation too - even if we need to go well beyond politics to realise them.

Liberal theology and Liberal politics will be on the agenda at the Liberal Democrat party conference in Brighton this evening.