The Cornishman newspaper, one of a group of 3 local papers which cover the whole of Cornwall, reported their poll results this morning in all Cornish constituencies, all of which were taken by Conservatives last time. They did show a 32% 'undecided' vote, so that has to be taken into account: also the dates and means of polling were not given, but I suspect were several days, even a week, ago'
The only constituency which appears to be 'in the bag' for the Tories is SE Cornwall. Two constituencies show significant leads for other parties, namely Camborne where Labour have a 5 point lead over the Tories (25 to 20%) and St Ives where the LibDems have a 14 point lead (34 to 20). In St Ives only 23% were undecided, and the Tories are seriously rattled: the newspaper came wrapped in a 4 page ad for Theresa May, or so it appeared. In Truro and Falmouth, Labour are (surprisingly) second in the poll, just ahead of the Lib Dems, and not too far behind the Tories. UKIP are only contesting Truro because the MP was a 'remainer', so their vote there could be crucial. North Cornwall is close (2% lead for Tories over LibDem).
All quite striking for a county that voted strongly to leave the EU, but the reality of losing the EU grants and little prospect of long-term replacement, has sunk in, perhaps. A couple of Plymouth seats will probably go to Labour too, and Torbay to the LibDems. Schadenfreude.