Liberal leader Stéphane Dion has added a new line to his speech that reflects the fight he is facing in this campaign. It is an attack on Jack Layton.

As Dion now has it: "Jack Layton's old-fashioned socialist mentality is as backwards as Stephen Harper's old-fashioned conservative ideology."

This new addition looks like a reflection of the fact that in some parts of the country, the Liberals need to fight the NDP as fiercely as they do the Conservatives.

Indeed, some pundits are suggesting the NDP may overtake the Liberals as the alternative to the Conservatives.

The new line recognizes that threat and attempts to lump the Liberals' two main opponents into the same, as Dion sees it, anti-progressive category.

If the NDP keeps up its momentum in the polls, you'll likely be hearing more of that line.

—Susan Bonner