A number of unions have registered as third party advertisers in the lead up to the October election, but PSAC, PIPSC and CUPW, all big spenders in 2015, haven't locked down their exact spending goals yet.

PIPSC president Debi Daviau, left, and PSAC national president Chris Aylward, right. Mr. Aylward says the Liberal government would be 'well advised' to try to reach an agreement with the union before the October election. PIPSC registered as a third party advertiser for the 2019 election on Aug. 16.