Before revision: In the Australian Senate, Senators vote in favor of a motion by sitting on the benches to the president's right (left of photo), and against it by sitting on the benches to the president's left (right of photo) In parliamentary systems, politicians are said to cross the floor if they formally change their political affiliation to a different political party than which they were initially elected under (as is the case in Canada and the United Kingdom) .
After revision: In the Australian Senate, Senators vote in favor of a motion by sitting on the benches to the president's right (left of photo), and against it by sitting on the benches to the president's left (right of photo) In some parliamentary systems (e.g., in Canada and the United Kingdom), politicians are said to cross the floor if they formally change their political affiliation to a political party different from the one they were initially elected under .