I am afraid that the raw party vote numbers mean nothing when it comes to a further referendum. Labour are not in the above chart, presumably because despite their declared policy being to leave with an “agreement” (essentially no actual change from the current relationship but to lose voting rights) in reality their actual policy is to do whatever it takes to force a general election. In a referendum a significant number of Labour voters , perhaps a third , would vote to leave, as would a smaller proportion of Liberals, Greens, SNP etc, etc. and likewise a small percent of the Conservative , DUP etc voters would select remain. The only voters that would near unanimously support their parties declared policy are Brexit, UKIP, and perhaps the ‘English Democrats ‘.
Professor Curtis had it right when he declared that Britain remains split down the middle, that there is no evidence voting intentions have changed and that only a fool would demand a further referendum anticipating a particular result.
All the spin is simply designed to make us dizzy.
Jerry