The race to become the next Conservative Party leader has begun, following Theresa May's announcement that she will step down next month, ONA reports citing BBC.
The contest will not only result in a new party leader, but also in the next prime minister of the UK.
Party bosses expect a new leader to be chosen by the end of July.
Mrs May confirmed on Friday that she will resign as party leader on 7 June, but will continue as PM while the leadership contest takes place.
She agreed with chairman of the Tory backbench 1922 Committee, Sir Graham Brady, that the process to choose a new leader should begin the week after she stands down.
Four candidates have confirmed their intention to stand:
-Foreign Secretary Jeremy Hunt
-International Development Secretary Rory Stewart
-Former Foreign Secretary Boris Johnson
-Former Work and Pensions Secretary Esther McVey
However, more than a dozen more are believed to be seriously considering running - including Sir Graham, who has resigned as chair of the 1922 Committee.
Work and Pensions Secretary Amber Rudd has ruled herself out, telling the Daily Telegraph: "I don't think it is my time at the moment."
She also hinted that she could work with Mr Johnson in the future, saying: "I have worked with him before... we were able to work together."
On Friday, Environment Secretary Michael Gove - another possible candidate - declined to say whether he would stand, saying it was "the prime minister's day".
Most bookmakers have Mr Johnson as favourite, in front of former Brexit Secretary Dominic Raab and Mr Gove.