Were there some surveys conducted in the aftermath of the 2017 UK election (or even right before) that tried to find out what were the main issues that voters had on their mind in making their choice? I'm not looking merely for pundits' opinions on the matter... but I'm aware of some possible reasons outlined in the press, e.g. the proposed "dementia tax" supposedly having been a turning point:
The key turning came on May 19 — when the Conservatives released their manifesto, the British equivalent of a party platform. That day, the Conservatives led Labour by 47.2 to 31 — a 16.2-point margin. The margin started dropping almost immediately after that day, falling more than 6 full points, down to roughly 10.1 (44.8 to 34.7).
The key problem with the Conservative manifesto was a proposal to require individuals who need in-home support services, like a nurse, to pay for these services on their own if their combined savings and assets, including property, total 100,000 pounds (roughly $130,000) or higher. Currently, the UK’s ”social care” system pays for this kind of in-home assistance for many more people than would be covered under the Conservatives’ plan.
The proposal, which reportedly was added to the manifesto at the last minute, was an immediate disaster. Critics dubbed it the “dementia tax,” as many people who rely on social care are elderly individuals afflicted with dementia. It came across as unnecessarily cruel, once again playing into a longstanding sense that the Conservatives aren’t really interested in helping Britain’s most vulnerable.
The criticism of the “dementia tax” was so overwhelming that, three days later, it was removed from the Conservative manifesto. This actually managed to make things worse: It suggested that May, who had been running on the slogan “strong and stable,” wasn’t actually to be trusted.
This sounds fairly reasonable as an explanation, but it is not the only contestant:
It might have been possible for May to salvage this debacle if she sold voters on her own personal qualities. But she was horrifically wooden on the campaign trail; the word “robotic” was commonly used in the British press to describe her performance. She didn’t really speak to large audiences and rallies, and refused to participate in a debate among leadership candidates.
Corbyn, by contrast, held big rallies showcasing his ability to work a crowd. The Labour leader actually performed relatively well in high-profile media interviews, like a live grilling from popular TV host Jeremy Paxman. This steady performance in the face of Conservative blunders made him seem like a fresher choice than most people thought.
So are there reasons that can be found in population surveys for why the 2017 UK election went the way it did?
I found some of the usual demographic correlations in a YouGov suvery, namely (lower) age and (higher) education being the main predictors of a vote for Labour, but I think that's not particularly insightful in the context of this election.