Polls are designed to shape public opinion, not measure it.
Number of votes rarely translate to representation in Parliament. Our voting system needs changing as I have been saying for years regardless of whether right or left has a Parliamentary majority. A hung parliament should be 1/1000 on those numbers. Note that the left/right split isn’t far off 50/50, if anything left has a slight majority (if we count Labour on that side).
If Labour leaves us one decent legacy it could be a proportional system. Previously that would involve many voting themselves out of jobs for almost any majority Government. Hundreds of them will be gone whichever system you use now.