But why should that be the case? What does it add to our understanding of the proposals for, say gay marriage, whether or not a particular legislator is straight, married, single, gay, or divorced? Legislation is enacted on the merits of laws for the whole of society, not whether or not a specific individual benefits from it.
Watching Miliband's budget response, the main intention of this move becomes clearer. It is a piece of political theatre which remains one of the few avenues open to him as he is struggling to win arguments. Personalising politics is always a poor choice for any politician but with a leader who regularly fails to put in convincing performances, the Labour Party may have few other options than muck-racking.