This is the third in a series of posts on the boundary review. There is a general overview of what is happening and why it’s controversial here, a summary of what the effects are and some of MPs who are losing their seats here. This final post has the full, seat-by-seat, estimates of how the votes cast at the last general election would have fallen out on the new boundaries in England and Wales.
The changes in England and Wales result in the Conservatives losing 10 seats, Labour losing 28 seats, the Liberal Democrats losing 4 and the Greens losing Brighton Pavilion (though notional calculations like these risk underestimating the performance of parties with isolated pockets of support like the Greens and Lib Dems, so it may not hit them as hard as these suggest). The Scottish boundary commission don’t report until next month, but for obvious reasons the Conservatives and Labour can only lose a maximum of one seat each there, meaning that on these boundaries the Conservatives would have had a majority of around 40 at the last election.
The usual caveats I give for notional results apply – this is an accounting exercise, estimating what the ward level vote within each constituency would have been in 2015 (basing the distribution on the distribution at local elections) then reallocating the wards to their new constituencies and adding them back up again. If there is a radically different pattern of support in an area at local and national elections the figures might be misleading, if there are loads of independent candidates in any area (as in rural Wales, North Yorkshire or Cornwall) then the figures won’t be that accurate. If you know an area really well and you think the projections are wrong, then you are probably correct… but hopefully any such errors cancel out.
And a final caveat – this is purely a prediction of how the votes would have fallen out if the votes at the last election were counted on the new boundaries. They are certainly NOT a prediction of what would happen at the next election.