logroll

n. 1. (Logging) The act or process of rolling logs from the place where they were felled to the stream which floats them to the sawmill or to market. In this labor neighboring camps of loggers combine to assist each other in turn. Longfellow. [ U.S. ] [ 1913 Webster ]

2. Hence: A combining or mutual agreement in which one politician supports or assists another in consideration of receiving assistance in return; wheeling and dealing; -- sometimes used of a disreputable mode of accomplishing political schemes or ends. [ Cant, U.S. ] [ 1913 Webster ]