- Murathe made the announcement on Sunday, while explaining the conflict of interest in his bid to prevent Ruto from vying for the top seat.
- He explained that it was no longer reasonable for him to attack Mr Ruto as they both sit in the party's NEC.
- Murathe also pointed out that his views on Ruto and his bid to succeed President Kenyatta are his own, so they should not be viewed as the president's.
- Regarding claims of a memorandum of understanding between the two leaders, for President Kenyatta to back Dr Ruto for the top job in 2022, he said there was no such thing.
David Murathe has resigned from his post as Jubilee Party's interim vice-chairman, citing the conflict of interest in his bid to block Deputy President William Ruto's 2022 presidential bid.
Mr Murathe made the announcement on Sunday, while explaining why he wants the DP to retire alongside President Uhuru Kenyatta come that year.
Mr Murathe explained that it was no longer reasonable for him to attack Mr Ruto as they both sit in the party's NEC.
"I now find that it is no longer tenable to stay on as the party vice-chairman, given that I will have to sit in the same National Executive Council with a man I am taking to court to block from running for president," he told journalists at his Garden Estate home in Nairobi.
He added that he had written to Jubilee Secretary-General Raphael Tuju about his resignation but did not provide a letter.
Mr Murathe earlier said he will do anything to stop Dr Ruto, including going to the Supreme Court.
He says there are legal implications in the DP's candidature, his argument being that the presidency is composed of two holders; the president and the deputy, and that they should both retire after two terms in office.
On Sunday, Mr Murathe stood by his views that the deputy president should retire.