English

Verb

cross the floor ‎(third-person singular simple present crosses the floor, present participle crossing the floor, simple past and past participle crossed the floor)

1. (Britain, politics, of a member of a parliament) To vote against one’s own political party in parliament.
2. (Britain, informal, politics, of a member of a parliament) To resign from one’s political party and join another party, resulting in moving from one’s currently assigned desk or seat in the legislative chamber to a new desk or seat physically located with the other members of one’s new party.
   • 2007, Philip Webster and Francis Elliott, “How Brown led his latest recruit across the floor,” Times of London, 27 Jun. (retrieved 9 Nov. 2008),

     Two weeks ago, Mr Davies intimated to Mr Brown that he was ready to cross the floor.

Usage notes

• Potentially applicable to any parliament structured according to the Westminster system (and only such parliaments).

Synonyms

• cross the aisle