It is also possible that the same client is manipulating the Ipsos poll the same way. Without knowing what was asked before the how will you vote question it is hard to say what the poll means. From the direct knowledge I have about the Decima poll, I know the tactic is in use now so unless someone who has direct knowledge of the question order for the IR poll, I won't assume anythign different.
As wel the NDP has had a lot of negaitve publicity over this -- a self fulfilling prophecy may also be happening even thugh there is no logic for this. The NDP may have to respond to this BS by clarifyinf that it does not ever whip backbench votes due to a promise it made.
IR chronically under-represents the NDP anyway and there are other reasons for this that relate to methodology and sample and even time of day for calling.