In a resignation statement on the Conservative Home website, Timothy conceded that the campaign had failed to communicate "Theresa's positive plan for the future", and missed signs of surging support for the opposition Labour Party. She called the election because her government required a strong mandate heading into the Brexit negotiations.
The poll forecast the Scottish National Party (SNP) would win 34 seats, the center-left Liberal Democrats 14, the Welsh nationalist party Plaid Cymru three and the Greens one.
The Northern Ireland party won 10 seats, enough to give May a majority under a partnership in Parliament.
George Osborne, the former finance minister who stepped down at the election, told ITV that the results were "catastrophic" for his party.
Labour made a net gain of 29 seats, improving its total to 262.
Katie Perrior, who quit as May's communications chief in April, said Timothy and Hill were "great street fighters but poor political leaders" and exercised too much power over the prime minister.
On June 19, the first talks on Brexit is scheduled to happen and India would need to wait and watch what it's relation shapes like in the United Kingdom after the new government forms.
May had hoped the election would focus on Brexit, but that never happened, as both the Conservatives and Labour said they would respect voters' wishes and go through with the divorce. On voting day, The Sun urged its readers not to "chuck Britain in the Cor-bin", but after the results were out, its front page headline, over a photo of May eating chips, was "She's had her chips".
Looking tense as she delivered remarks after being re-elected to her Maidenhead constituency, 30 miles west of London, May said, "The country needs a period of stability and whatever the result the Conservative Party will ensure that we fulfill our duty in ensuring that stability".
Meanwhile, Labour leader Jeremy Corbyn said the early results showed May had lost her mandate and called for her to resign.
European Union states are getting impatient about the delays in the Brexit talks, with some warning Friday after Britain's inconclusive election that the country should not be given more than the allotted two years to settle its divorce.
Conservative member of parliament Anna Soubry was the first in the party to disavow Mrs May in public, calling on the Prime Minister to "consider her position".
Six Conservative ministers lost their seats, including Rob Wilson who said the Tory campaign was "terrible".
The Green Party's Laura Fisk said: "It has been an extraordinary election in extraordinary circumstances and it has been a pleasure to be involved in the democratic process".
German politician and European Union executive member Guenther Oettinger said, however, that a weak British leader increased the risk negotiations would turn out badly.
Because Labour was preparing for a crushing defeat, the outcome suggested by early returns will be cast by Mr Corbyn's supporters as a clear victory for the embattled leader and the leftist ideas he champions.
But few believe she can hang on for more than a few months.
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