What are MRP polls and can they anticipate political election results correctly?

.THERE IS bit question regarding the very likely winner of Britain’s general election on July 4th: along with a top of twenty portion aspects in nationwide opinion surveys, the Work Celebration is incredibly likely to gain. However there is actually anxiety about the measurements of Labour’s bulk in Britain’s 650-seat House of Commons. Some ballot agencies have released chair forecasts utilizing a novel procedure referred to as multi-level regression as well as post-stratification (MRP).

What are actually these surveys– and how exact are they?