car·pet·bag·ger 
(kärpĭt-băg′ər)
(kärpĭt-băg′ər)n.
1. A Northerner who went to the South after the Civil War for political or financial advantage.
2. An outsider, especially a politician, who presumptuously seeks a position or success in a new locality.
[So called because they carried their belongings in carpetbags.]
carpet·bag′ger·y n.
carpetbaggercolorized 1872 cartoon by Thomas Nast depicting Senator Carl Schurz (1820-1906) as a carpetbagger