I copied this message from the CRTC site..... looks like even if you have been put on the do not call list, political parties seem to be exempt from the rules. Figures! I have had calls from this number several times per day over the past week

Does being on the List prevent all unsolicited calls?
Being on the National DNCL keeps you from receiving most telemarketing calls, but there are exceptions. Registered charities are still allowed to call for donations, and certain other organizations—such as companies conducting polls or surveys, political parties, and newspapers looking for subscriptions—can also continue to contact you. As well, if you’ve done business with a company in the last 18 months, that company is considered to have a relationship with you and is allowed to call. After 18 months the company must stop calling if you’re on the National DNCL, unless you give permission otherwise. To learn more about exemptions, call 1-866-580-DNCL (866-580-3625) or go to www.dncl.gc.ca.