That said, I do worry about the idea of two people sharing the role of constituency MP, as suggested in a proposal to be put to the spring Lib Dem Conference.
I worry because I fear it would further undermine the basic premise of representative democracy - that is that an MP uses his or her judgement on the issues that come before parliament and is judged by constituents at the next election.
Yes, that view ignores the overwhelming importance of parties, but I would not to see it undermined any further.
We seem now to be governed by politicians who regard elections, not as a chance to justify the way they have voted over the past few years, but as an occasional hazard thrown up by the profession they have chosen.
So all parties have found Europe too hot to handle in general elections and instead pushed the issue away, saying it will one day be the subject of a referendum - a referendum that ever seems to take place.
And at the last election there was something approaching a conspiracy between the parties that saw no one admitting just how severe were the economic problems we face.
Having people sharing the role of MP risks accepting the view that they party politicians are more or less interchangeable. The way that British MEPs think themselves justified in resigning their seats and passing them on to someone else on their party's list halfway through a term suggests it is already accepted in those circles.
And what happens if the two people sharing disagree on an issue? I suspect the answer would be that they would both abstain, which would do nothing for out politics either.
Perhaps this is too pessimistic. There are plenty of MPs who are not smooth professional politicians or party animals. In fact I suspect this parliament has set some sort of record for rebellions against the whip, thought that is probably a function of the unique circumstances of the coalition.
But I still cling to Edmund Burke's view of the role of an MP:
Your representative owes you, not his industry only, but his judgment; and he betrays, instead of serving you, if he sacrifices it to your opinion.I fear that job sharing would accelerate the retreat from that approach. Perhaps our problem is precisely that we now see being an MP as a 'job'.