Presumably May is still intending to stick with the team she chose before the election to negotiate Brexit. The DUP's ten seats could help May cobble together a 326 parliamentary majority needed to pass through laws.
Both the Mail on Sunday and the Sunday Times newspapers reported that aides to Johnson, a leading Brexit campaigner, were taking soundings about a potential leadership challenge.
But reports suggest they demanded the departure of May's joint chiefs of staff, Nick Timothy and Fiona Hill, as the price for allowing the 60-year-old vicar's daughter to stay in office.
Few, not least Britain's Prime Minister Theresa May, expected the UK's prospects to have changed so dramatically overnight.
Brexit Secretary David Davis said he would "fight tooth and nail" to keep Mrs May in post, and dismissed suggestions he might replace her.
The UK election of 2017 ended in a hung parliament after the ruling-Conservative Party of Prime Minister Theresa May failed to retain its majority, however, British Prime Minister Theresa May said she would lead a minority government.
London's neutrality in Northern Ireland is key to the delicate balance of power in the province once plagued by decades of unrest.
The British government doesn't have long to ink a deal.
In 2010, the Conservatives formed a coalition government with the Liberal Democrats, the first formal coalition since Winston Churchill's government during World War II.
Leaving the European Union single market would give Britain the opportunity to strike its own trade deals outside the bloc.
But no deal has yet been finalised and talks on the arrangement will continue during the week as Mrs May desperately tries to shore up her position after losing her Commons majority in the election. "And there's already uncertainty about Brexit. and we will see more uncertainty.
The talks so far have been positive", it said. She confirmed this to German leader Angela Merkel in a phone call on Saturday. She's then got to present a programme to Parliament.
Britain's largely pro-Conservative press questioned whether May could remain in power. An outside chance sees a way Labour party head Jeremy Corbyn - known as the Bernie Sanders of Britain - might form a successful minority coalition and usurp the Prime Ministership for himself.
But Johnson reacted to media speculation on Twitter by dismissing any rebellion: "I am backing Theresa May".
An exit poll - carried out by Ipsos MORI and GfK for Sky News, the BBC and ITV News - is predicting that the Conservatives will be the largest party in the next parliament. She's now attempting to form a government.
She said that the poor showing meant that she would need to "reflect" on voters' appetite for a new referendum. Meanwhile, Labour - previously written off by critics - surged to 261 seats, up 29 from 2015.
"The Conservatives have not yet broken the British system of democracy, but through their hubris and incompetence they have managed to make a mockery of it", it said in an editorial.
Its eurosceptic wing has always been a thorn in the side of Conservative prime ministers.
But there is speculation she may now be forced to soften her approach, which had included a threat to walk away without a new trade deal in place.
Some Tories, including the party's Scottish leader Ruth Davidson, are unhappy about a deal with the DUP because of the party's opposition to gay marriage and abortion and other policy clashes with the Conservatives.
She has said she favours retaining the greatest possible level of access to Europe's single market.
May said Friday she looks forward to working with "our friends and allies" in the DUP.