Members of the DUP are holding first talks to discuss a possible deal with the Conservatives - but sources said any arrangement "will come at a price".
Party officials are "in no rush to complete any agreement" - with the real deadline seen as the Queen's speech on June 19, reports ITV News reporter Marc Mallett.
Their likely role as kingmakers leaves them able to demand terms - and top on their list is likely to be an assurance there will be no referendum on a united Ireland, he said.
The party is also likely to press for a favourable Brexit deal for Northern Ireland, a bigger police budget, and support for the tourism industry.
Indications suggest that a full coalition is unlikely, with a deal likely to involve a more informal "confidence and supply" arrangement.
Theresa May is expected to receive a frosty reception when she meets the 1922 Committee later. But what do we know about the group?
The Prime Minister appointed her former leadership rival as Environment Secretary as she confirms her new top team.
He insisted he would be backing Theresa May as leader and has warned MPs to "calm down and get behind the Prime Minister".