Are the PCs really going to “cry poor” and cancel the “Huron LRT” (lol) then in the same breath promise a subway to Square One? Which would not cost $1-2 billion, as was stated earlier in this thread. Distance is about 12km x $372 million per km for subway construction (based on TYSSE) = ~$4.5 billion.
But based on estimates for the Scarborough extension (~$5 billion for 5kms of tunnel & 1 stop), this could become $10 billion or more easily, especially if more than one stop is envisioned, by the time shovels hit the ground.
Not to mention a 4 year wait for LRT vs 15-20 years for any subway.