LONDON (Reuters) - British pollster YouGov on Wednesday set out the methodology behind its model which produced a shock projection that Prime Minister Theresa May would lose control of parliament in the June 8 election.
In stark contrast to opinion polls that have until the past week shown May on course for a big win in the snap election she called, the YouGov model suggested May would lose 20 seats and her 17-seat working majority in the 650-seat British parliament.
The polling organisation said the model, developed by its data science team and London School of Economics Professor Ben Lauderdale, employed a technique called multilevel regression and post-stratification analysis to estimate the result in individual constituencies.
The polling company said it would update the first findings of the model later on Wednesday.
Reporting by Paul Sandle; editing by Guy Faulconbridge