There is no easy option for Northern Ireland after Brexit.
The DUP's £1.5bn agreement with Theresa May has changed the balance of political risk.
Attempts to water down reproductive rights encouraged pro-choice MPs to organise.
Its seven MPs are much less sympathetic to Corbyn's party than popularly imagined, and won't ever take their seats.
The DUP has secured a 10 per cent increase in Northern Ireland's budget in return for propping up the Prime Minister.
The party has her, and the Conservatives, over a barrel.
An increasing number in Theresa May's party believe she should form a minority administration.
Corbyn's one-time leadership challenger tipped to take on the brief, against the backdrop of a Tory deal with the DUP.
The party won't attack social legislation and will use its position to prove unionism works.
The Unionist party has more scope to bully the Conservatives thanks to the 2011 law.
The UK government's potential confidence and supply arrangement could well suit Sinn Fein as well as it suits the DUP.