The cities could have a bit more leverage if they get federal commitments before the provincial election. It'll be interesting to see if the federal Liberals do pre-pre announcements in 2019 before the Alberta provincial election like the Harper Conservatives. There is federal money available in PTIF or the Infrastructure Bank (IB is unlikely for these extensions).
I wonder what the level of organization is in YEG, it can't just be Councillors doing the ask. YYC has LRTotG, but everything seems on hold until it's revealed just how far south Green Line Phase 1 will be. Strategy would be to make noise far south enough that it's a very outside chance of being phase 1 and actually shovel ready (e.g. Auburn Bay/Mahogany organization). The politicians have to be team players, the public/communities do not. My impression is given 2017 municipal election dynamics in YYC (hostility to Green Line plan, and effort just to save it) that YYC has a structure/framework but is at the same start line as YEG. Councillors and MLA's are perhaps even in YYC and YEG, although YYC council is dysfunctional and they could have problems ID'ing and clearly/enthusiastically communicating their next project.
If YYC Councillors/admin is smart they'll ID multiple plans maybe with multiple extensions. E.g. Green Line north to 40 Ave, South to Auburn Bay, NE to 88 Ave, combo's of above, or even more of above and WLRT plus SLRT plus NW LRT. Because Calgary continues to sprawl and the MDP isn't followed, extensions to all lines will come sooner than the CTP predicted.
Outside YEG and YYC, there's $43mm per year for 5 years with half that from the carbon price the UCP are basing their election on (i.e. eliminating it).
https://www.alberta.ca/community-transit-fund.aspx Keep in mind discounting satellites around YYC and YEG, Red Deer and Lethbridge are ~100,000, Ft Mac, Medicine Hat, Grand Prairie are 60-70,000 and after that you're in the 10-20,000 range.