.THERE IS minimal doubt about the probably winner of Britain's basic election on July fourth: along with a top of 20 percentage points in national opinion polls, the Labour Event is actually very very likely to gain. However there is actually uncertainty regarding the size of Work's majority in Britain's 650-seat Residence of Commons. Some ballot companies have actually released seat predictions making use of a novel approach referred to as multi-level regression and also post-stratification (MRP). What are actually these surveys-- and exactly how precise are they?