The word 'defection' is correct and commonly used in written English.
It is often used to describe the act of abandoning or betraying one's country, organization, or cause. It can also refer to the act of leaving one group or party to join another. Example: The politician's defection from his party caused a major shift in the balance of power in the government.
The prime minister tried to move the focus to Miliband after Reckless, whose defection from the Conservatives triggered the byelection, inflicted a humiliating blow.
These soldiers had no place to hide after their defection but went to the people living in these neighbourhoods to give them a shelter.
The byelection, caused by the defection of the Tory MP Mark Reckless, is likely in early November.
His comments came as Syria's deputy oil minister announced his defection, making himthe highest ranking official to abandon Assad's regime since the country's uprising erupted a year ago.
His defection personified the decline in fortunes of the party in the Republic of Ireland, where it lost its sole European seat in June and has seen its representation in the Dáil reduced.
While his defection may prove a double-edged sword for Labour, and it may even disrupt Ukip, it is really horrible for David Cameron.
As is normal journalistic protocol, I sought opinion on the mass defection from the party leader.
Labour survived Oswald Mosley's disloyalty in the 1930s, though his economic analysis was smarter than theirs (William Jennings Bryan too?), just as it did the SDP gang of four's defection in the 1980s.
Kerr's defection to the anti-Agreement camp marked a serious setback for Trimble.
But the defection of Abdo Hussameldin, a relatively minor and unknown figure outside of Damascus, underscores the difficulties Syria's fragmented opposition has had in persuading senior regime figures to abandon Assad.
The Clacton byelection was caused by the defection of the former Tory MP Douglas Carswell, who is standing as the Ukip candidate.
