The general election result has ended up with a hung parliament.
It’s now up to party leaders to sort out a deal to form a coalition, press on with a minority government – or just have a new vote all over again.
The DUP’s 10 MPs would be enough to take the Tories – on 318 seats with one constituency left to declare – past the 326 mark to secure an absolute majority.
But who are they?
The DUP, lead by Arlene Foster, are the biggest political party in Northern Ireland with a narrow edge over Sinn Fein who have refused to sit in parliament.
They sit well with the Tories with their pro-Brexit and pro-Union stance.
They gained two MPs in yesterday’s election having held eight seats in the previous parliament.
Leader Arlene Foster was Northen Ireland’s First Minister but resigned at the start of the year following a renewable energy row.
What do they stand for?
They strongly support nuclear deterrent with it featuring in their manifesto which, if they got into joint power, would not go down well with anti-Trident Jeremy Corbyn and the SNP.
Although they are supportive of Brexit, the DUP do not want a hard border with Ireland, saying it will bring economic prosperity.
Essentially, they are not supportive of the Hard Brexit that Prime Minister Theresa May is determined to press ahead with.
They also want lower corporation tax.
Other controversial stances include being anti-abortion and anti-gay rights.
What’s being said?
The surprise election result has thrust the DUP’s leader Arlene Foster into the role of kingmaker.
Speaking shortly before the announcement of May’s visit to the Palace, Ms Foster said it was “too soon to say” what would happen and predicted it would be “difficult” for the Prime Minister to continue in her role.
“I certainly think that there will be contact made over the weekend but I think it is too soon to talk about what we’re going to do,” she said.
The DUP and Conservatives have been in close touch throughout May’s year in power, and contacts are believed to have continued as election results came in this morning.
The Northern Irish party are thought to have been cautious about committing themselves to an arrangement because of uncertainty about the future of the Tory leadership.
Asked if she thought May would be able to stay in her job, the DUP leader told the BBC: “I don’t know”, adding: “I think it will be difficult for her to survive.”