Lib Dems win Brecon & Radnorshire by-election - BBC News
Conservatives' working majority in the House of Commons cut to one
And then there was one. That could be the dawn chorus ringing out the over the hills of Brecon and Radnorshire all the way to Westminster this morning.

If the Liberal Democrats seize the seat from the Conservatives, then the UK government’s “working majority“ will be reduced to the most single of single figures.

For a government to have a simple majority, it must have more seats than the rest combined. But when Theresa May did the sums after her ill-fated calling of the 2017 general election, she fell short.

So she courted the support of Northern Ireland’s Democratic Unionist Party, giving her a working majority of 13. Slowly but surely that’s been whittled down.

A week after moving in to Downing Street there could be a rude awakening for Boris Johnson this morning to the harsh realities of Parliamentary maths.

At least he doesn’t have to try to steer some highly contentious issues through the Commons over the autumn months. Oh, wait…