Above is the Wikipedia list of all the published polls since the general election campaign began. The overall picture is of not that much variation with the Tories in a range of 37-42%, LAB 27-31% and the LDs 15-17%.
The one party where there’s a lot of variance is Brexit which has a polling range of 4-10%. That’s largely explained by YouGov’s methodology change that factors in the fact that Farage’s party will be only be contesting non-CON seats.
Generally I’m not a great fan of voting intention polling as a means of getting a feel for how things are going – leader ratings have historically been a better guide.
What’s pleasing about the current election is that we are getting a wider range of regular leader ratings than we’ve seen before.
The weekly Deltapoll have joined Ipsos-MORI and Opinium in always including a ratings element. Ipsos MORI has also added a favourability question.
Swinson has the the largest number, 33%, saying don’t know and that should get smaller during the campaign. Johnson tops on favourability while Corbyn has the most saying they have an unfavourable view. This is in line with other pollsters and other question formats.