YouGov give Labour a nine point lead
Tonight's YouGov poll for the Sun has topline figures of CON 35%, LAB 44%, LDEM 10%. The nine point lead is the highest YouGov have shown since the election, although some other companies have given Labour double-digit leads.
I'll add my normal caveat about movements in polls, they are normally by definition outliers. In the last week YouGov appear to have been showing a Labout lead of about 7 points, so we should expect normal sample error to spit out the occassional 5 point lead or the occassional 9 point lead.
On a uniform swing this would give Labour a majority of over 100 - though of course, in practice the next election will likely be fought upon different boundaries and maybe even a different electoral system.