.THERE IS minimal question concerning the very likely victor of Britain's basic political election on July 4th: along with a lead of 20 percentage factors in national point of view polls, the Labour Event is exceptionally probably to gain. However there is uncertainty about the measurements of Labour's majority in Britain's 650-seat Residence of Commons. Some ballot firms have released chair forecasts utilizing a novel procedure referred to as multi-level regression and post-stratification (MRP). What are these polls-- and exactly how precise are they?