Verification of Vote
47. When a question upon which the yeas and nays have been taken has prevailed or failed by not more than five votes, the Speaker may, upon request of five members, order a verification of the vote. During such verification, no member shall change his vote unless it was erroneously recorded, nor may any member not having voted cast a vote. A verification must be called for immediately after a vote is announced and before any other business has intervened.