carpet-crossing n. the act of joining an opposition (political party) or conceding to its policies. Also floor-crossing, crosstitution. (source: Double-Tongued Dictionary)
Further reading
In 1916, a small-town newspaper in Pennsylvania printed a fanciful item about a local gathering with a guest list that included, among others, Miss Ella Vader, Mr. Ray Zor, and other punny names. This is part of a complete episode. Transcript of...
The expression to run the traps means “to perform due diligence” or “solicit a wide variety of opinions” or “investigate every angle thoroughly.” This metaphor derives from the literal sense of running the traps, which refers to hunting and fishing...