Does this mean anything or is it just what happens you poll hypotheticals that will never happen?
The latter.
The bottom line to this is that despite all the awful things Harper has done and all the times he's proven to be an incompetent airhead, people resign themselves to voting Tory because they feel (very wrongly, imo) that he's the most competent PM for the economy and because they feel he hasn't done that bad of a job (again, imo, he's the worst PM in a long, long time). Of course, people don't like Harper much and he isn't doing much himself to build a personal following, but they don't like Ignatieff much at all anymore. They like Layton (and Duceppe, but that's an old shtick) but the NDP doesn't seem to be able to transform Layton's likability into votes for the party (though the NDP is polling quite well considering that lately its support waned in non-election mode season). And the Greens are still polling all over the place and probably won't do well in the next election and as long as they're led by that stupid gadfly Elizabeth May. Turnout was very low in 2008, I'd be quite surprised, at this point, if it didn't fall again in 2010/2011.