Theresa May needs the backing of the DUP's 10 Members of Parliament after her own Conservative party failed to gain a majority in a general election earlier this month.
The deal will see the DUP support May's minority government on key votes including Brexit, the UK's exit from the European Union.
In exchange, the DUP will receive more than a billion dollars in extra funding for Northern Ireland.
But not all parties are happy and some have raised doubts about its impact on the Good Friday Agreement and the issues affecting the power-sharing assembly in Belfast.
Will the deal help or hinder the peace process in Northern Ireland?
Presenter: Richelle Carey
Alex Deane, former chief of staff to former British Prime Minister David Cameron
Patricia MacBride, lawyer and Political Commentator
John Ryan, fellow at the London School of Economics
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