Maybe - I just think that the acceptance of a loss on the 23rd seems so widespread that not many will be surprised, and if asked to vote now you have to price it in now.
Not saying no one would be swayed, just don’t buy that it will be a big game changer - most will surely have decided already
Why though? Everyone is expecting a big loss on the 23rd (Tories included). Why would the views of many change just because it's actually happened?