New Liberal Democrat MP Sarah Teather is the latest in a stream of voluntary sector staff to leave lobbying behind for a seat at Westminster.
The 29 year-old, who became the UK's youngest MP when she won the Brent East by-election last week, will be leaving Macmillan Cancer Relief, where she works as a policy analyst.
Other MPs to have worked in the voluntary sector include Minister for the Voluntary Sector Fiona Mactaggart, who was general secretary of the Joint Council for the Welfare of Immigrants, and Minister for Skills John Healy, who worked with Stuart Etherington, now chief executive of NCVO, at RNID.
Home Office Minister John Denham, who was the third government minister to resign over the Iraq crisis, was a campaigns officer for the charity War on Want from 1984 until 1988.
Teather won her seat with a majority of 1,118 over Labour's Robert Evans, marking Labour's first by-election loss for 15 years.