This post from the turkeys/Christmas thread seems to be very representative of what happened at this election:
Well I'm a life long Labour voter (since 1970s) remain voting Northerner who lives in a constituency that has just turned Blue for the first time ever. I voted Conservative, as did my remain voting, left leaning DC.
I think all the family would now vote leave if there were a second referendum, which I suppose this election kinda is?
Reasons have little to do with Boris and more to do with dislike of Corbyn and disbelief at the reckless spending plans. We all believe the leave vote should have been respected and implemented long before now. But mostly it was Corbyn.