Federal Election Seat Projection as of September 20 2015

It was not a very good week for the NDP. The R word ("refugees"), which everyone thought was a problem for the Conservatives, turns out not to be a problem at all. The NDP seemed to suffer from the Leap Manifesto and the Mansbridge interview, both of which seems to have reminded the electorate that NDP philosophy is a bit too far left for the average voter. Further, with the Liberals committing to a deficit to stimulate the economy, the NDP position of no deficit, seems unlikely, and the release of the numbers to back up the NDP fiscal plan didn't help. Although there are close to 20 seats that can swing either way, based on the last 12 polls, they look to be swinging Prime Minister Harper's way at the moment.
Here are this weeks' polls:

And, if the election were held today, here is how those polls translate into seats in the next parliament.

The Conservative gain appears to be the NDP's loss, with the NDP heady days of August just a memory.
If we look at the trend since the election was called at the beginning of August, here's what party trending looks like:

As of today, it looks like it's going to be all about getting the vote out on election day.