.THERE IS minimal uncertainty regarding the probably victor of Britain's standard vote-casting on July fourth: along with a lead of twenty percentage aspects in national viewpoint polls, the Work Gathering is exceptionally most likely to succeed. But there is actually uncertainty concerning the size of Work's majority in Britain's 650-seat Property of Commons. Some ballot organizations have published seat predictions using an unfamiliar procedure known as multi-level regression and post-stratification (MRP). What are these surveys-- as well as how correct are they?