Member Defections: Automatic By-elections

Debate between Lisa Smart and Graham Stringer

Monday 16th March 2026 Westminster Hall

[Lisa Smart]

I could not be more delighted to go into details about different voting systems. The hon. Gentleman will know that AV is a preferential system, not a proportional one. I am talking about proportional representation. AV would have been a better system than first past the post, but a proportionate system would be even better. It has long been in the Liberal Democrat manifesto that that would mean fairer representation and more people having their say.

[Graham Stringer]

I am sure that everybody in this room is familiar with the arguments for and against PR. In moving the motion, the hon. Member for South Cotswolds (Dr Savage) gave a very balanced speech. There was only one thing that I thought was unbalanced: the argument that somehow there would be less tactical voting in a PR system. A PR system is actually set up and designed for tactical voting. I would be grateful if the hon. Member for Hazel Grove (Lisa Smart) gave an opinion on that.

[Lisa Smart]

Many people, when talking about tactical voting, mean voting to stop somebody: a person has a preferred party or candidate, but lends their vote to somebody else to stop a third party they really do not want getting in. There are many different proportional systems—indeed, we have different systems in Wales, Scotland and Northern Ireland—and I would happily debate many of them, but I think it would test the patience of this Chamber if I were to get further into the weeds about my favourites. I recommend the Liberal Democrats for Electoral Reform panel from the Liberal Democrat spring conference, where a number of us spent the weekend. I very much enjoyed being on that panel, which did get into the weeds. It might not be to everyone’s taste, but I assure hon. Members that it was a packed house with standing room only.

I will move on to the need to change and reform the House of Lords. It is simply indefensible that unelected peers continue to make laws for life in a modern democracy. The Liberal Democrats are committed to replacing it with a chamber that has a proper democratic mandate—one that reflects the country it serves, rather than the Prime Minister of the day. In a general election, the power sits with electors over who their MPs are. If they do not like something that their MP has done, they can choose somebody else at the next general election. Voters have precisely no power to do so with Members of the House of Lords. There are peers currently sitting in the House of Lords who have moved parties, and there is no mechanism to remove them for doing so.

Thirdly, the ministerial code must be enshrined in law. The fact that scandal after scandal has come out of previous Governments, and indeed this one, shows why there should be a set of legally enforceable expectations for Ministers and those in positions of power. Without that in law, we cannot guarantee that they will act with integrity, especially given that former Conservative Ministers are leaving the party rather than allowing themselves to be held to account. Right now, Ministers who act corruptly or behave improperly face, at worst, a quiet resignation and a comfortable future elsewhere. That is not accountability. Enshrining the ministerial code in legislation would mean that there are real consequences for those who abuse the public trust.

The recipient of a number of these defections is Reform UK, but it is not a party of insurgents challenging the establishment. It is more accurately described as a scrapyard for the very people who were the establishment and failed. Rather than accepting the public’s verdict on their failures in government, those politicians are seeking refuge in a party that wants to make us all less safe by dragging the UK out of the European convention on human rights, asking for payment for NHS services and platforming conspiracy theorists. Although by-elections for those who defect may not be mandated, the voters in those seats have the ultimate power—the power of their vote, come the next election—and I hope they will use it at every available opportunity.