The most recent Electoral Calculus page is pretty interesting.
https://www.theguardian.com/science...nt-count-on-remain-votes-the-data-looks-bleak
http://www.electoralcalculus.co.uk/homepage.html
In short: Labour is losing a small trickle in every direction, but actually, have remained surprisingly stable since 2015 (probably because they were already at their core vote). Their biggest problem is the small
'Hard Remain' group moving to the Liberal Democrats (although the most recent polling suggests that may not be the case...). Their problem is not that their votes are moving to the Conservatives, but that they're staying still and the Conservatives are absorbing UKIP.
The Liberal Democrats have had a small recovery, but it is taken almost entirely from Labour, which means they're very unlikely to win back many seats. Of the top 25 Lib Dem target seats, only 3 are Labour-held. The more evidence we get, the more I think the Lib Dems are going to underperform compared to people's expectations. 20 seats would be an exceptionally good night for them, in all honesty. The current projection actually shows them
losing seats, although I think that will be counterbalanced by the incumbency effect.
The Conservatives aren't really taking anything away from Labour or the Lib Dems - a small trickle, nothing significant. What has happened is that UKIP is just collapsing and the Conservatives are feasting on their remains. The seats Labour needs to be most worried about are ones where UKIP did well and the Conservatives were close behind.
2017 is looking like it will basically be 2015 except half of UKIP voters go Conservative.