The poll was run for campaigning Conservative Party think-tank Onward. The full report (or rather presentation)is here, and quite interesting in many ways. Worth a scroll through.

The responses to questions on democracy and authoritarian government are surprising. There may be a methodological flaw, maybe not. Possibly this reflects frustration with Theresa May and her long argy-bargy with Parliament, which may to younger voters appear totally out of touch (are they wrong?).

Things are going to slide, slide in all directions
Won't be nothing
Nothing you can measure anymore
L. Cohen