The last year has seen opinion and election polling subjected to both criticism and praise. Here we review the evidence, looking particularly at recent experiences in the US, UK, France and the Netherlands.
Britons remain split on prioritising single market access or immigration control – both are seen as important, but there has been a move towards single market.
Confidence in Theresa May to get a good deal for Britain in Brexit negotiations has fallen, though this is still just ahead of Jeremy Corbyn.
Ipsos's July 2017 Political Monitor shows Theresa May’s leadership satisfaction ratings falling further after the General Election as Jeremy Corbyn's continue to improve.
Suzanne Hall looks at our General Election focus groups conducted for the BBC and identifies some trends which help unpick Thursday's shock election result.