In the lead-up to the vote on Sept. 20, we asked our panel of commentators for their thoughts on how the parties are faring in the final week of the campaign. The text of the interviews has been edited for clarity and brevity.   Joe Oliver: Very Close Race Former Conservative MP and minister of finance The polls show that the Conservatives have lost their momentum, at least temporarily. And I don’t know if you would say that the Liberals have momentum, but they’ve stanched the flow. It’s getting razor-thin in the polls, and the Conservatives would appear to be behind in seats, because they need a three- or four-point advantage to be ahead on seats. But when it’s this close—and some ridings will be decided by a few hundred votes—you can’t possibly know for sure, so I wouldn’t plan to place big money bets. Polls can be wrong, and …