The general election on 4 July will be fought across 650 new constituencies after boundary changes were approved by parliament.
With only 77 constituencies remaining unchanged, the boundary review changes which seat many people will be voting in. Not only does it mean that seats may have a new name, but geographical changes to seat boundaries many also mean that historical knowledge of voting patterns may be irrelevant, having implications for those hoping to vote tactically.
While no election has taken place along these boundaries yet, research by psephologists Colin Rallings and Michael Thrasher, academics at the University of Plymouth, has modelled how, based on 2019 results, these new seats would have notionally voted in that election.
