Conservative Party chairman Andrew Feldman will step down when the Prime Minister leaves Downing Street later this year.
David Cameron has asked Lord Feldman to stay on while the party elects a new leader, which is expected to take place before the autumn conference.
A Conservative spokeswoman said: “Andrew Feldman always said that he would serve alongside the Prime Minister for as long as he was needed.
“The Prime Minister has asked him to stay as chairman of the Conservative Party whilst the leadership campaign takes place. He will ensure that the party conference is properly delivered in the autumn.
“Lord Feldman will step down when the Prime Minister leaves Downing Street.”
Lord Feldman was seen visiting Downing Street on Friday morning shortly before Mr Cameron announced his resignation.