One traveling with only a carpetbag; esp. a political adventurer from the North in the Southern States after the Civil War: a term of contempt.

【贬】到处投机取巧招摇撞以图侥幸谋利者；【美】(尤指)美国南北战争后，企图在南方谋私利的北方投机政客。

Any person moving into a new territory for political advancement.

到别的地方图谋政治发展的人。