Oliver Dowden, the chairman of British Prime Minister Boris Johnson's Conservative party, resigned on Friday, saying it could not carry on with business as usual after two crushing by-election defeats and someone had to take responsibility.
"Yesterday's parliamentary by-elections are the latest in a run of very poor results for our party. Our supporters are distressed and disappointed by recent events, and I share their feelings," Dowden said in a resignation letter to Johnson.
"We cannot carry on with business as usual. Somebody must take responsibility and I have concluded that, in these circumstances, it would not be right for me to remain in office."
(Reporting by Alistair Smout; Editing by Clarence Fernandez)
