Jabberwok I'm not claiming that low income does equate with low intelligence and/or lack of interest in politics. Where did I say anything about intelligence?
However, the Joseph Rowntree Foundation specifically studied people who do have a low income and had not voted in previous elections. They surveyed 10,000 people over three years, which is a lot for any such study.
They found that people on a low income were less likely to vote because they were more likely to be disillusioned with politics and to feel that nobody is listening to them.
Apparently, more low income people voted in 2017 than in 2015 and one of the reasons given was that people felt Corbyn had given them hope.
The reason I looked up the study was because Urmstongran mentioned it. Apparently, there was an article about it in the Guardian, but I always prefer to go back to the source, if I can. It would appear that approximately one million more people on low incomes are intending to vote in this election than in previous ones. Urmstongran said that they could tip the balance and I was interested to find out how they could tip it.
The majority live in the Labour heartlands in the North, but from the evidence in the study, it doesn't look as though many of them will be voting for Brexit & Co. The study breaks them down into various groups and the only sub-group likely to vote Brexit (and then by a narrow margin) is the elderly "traditional working class". Most of the rest intend to vote Labour. Of course, that might not make much difference to anything if they live in strongly Labour constituencies.