carpetbagger
Concise Oxford English Dictionary © 2008 Oxford University Press:
carpetbagger/ˈkɑːpɪtbaɡə(r)/
▶noun informal, derogatory
- 1 a politician who seeks election in an area where they have no local connections (originally a northerner who went to the South after the American Civil War).
- 2 Brit. a person who becomes a member of a mutually owned building society or insurance company in order to gain financially in the event of the organization demutualizing.
'carpetbagger' also found in these Oxford entries:

