ICM/Guardian - CON 39, LAB 34, LD 7, UKIP 10, GRN 3

ICM released their final monthly voting intention poll of 2015 yesterday, with topline figures of CON 39%, LAB 34%, LDEM 7%, UKIP 10%, GRN 3%. I assume it's the last voting intention poll we will see before Christmas. The full tables are here, where ICM also make an intriguing comment on methodology. They write,

For our part, it is clear that phone polls steadfastly continue to collect too many Labour voters in the raw sample, and the challenge for phone polling is to find a way to overcome the systematic reasons for doing so. The methodological tweaks that we have introduced since the election in part help mitigate this phenomenon by proxy, but have not overcome the core challenge. In our view, attempting to fully solve sampling bias via post-survey adjustment methods is a step too far and lures the unsuspecting pollster into (further) blase confidence. We will have more to say on our methods in the coming months.