Angus Reid's monthly Newsflash to panel members may provide some insight as to why it has a better reading of the pulse of the voters:
If a federal election takes place in the next three months, 90% of you are either certain or very likely to cast your ballot.
In other words, Angus Reid's sample is probably more politically engaged than average, and that makes sense. People who really care about current events go online to get their news.
