If Alberta were actually part of the US, it would probably be a lean Democratic state... something like Colorado but with a more urban population. I doubt Edmonton and Calgary would be good areas for socially conservative Republicans. But then again it's hard to know what Alberta would be like as a US state because surely it would have a very different set of people.
If analogous with America, then it would have to be Utah just based on voting patterns with a central city that every once in a while doesn't vote Republican.
I'm curious (this is obviously an unanswerable question, but I feel like posing it anyway)...considering the amount of influence a state of Alberta's size has on US politics, if Alberta joined the US, would the US tack left or would Alberta tack right?
Yeah... Alberta has a population about the size of Connecticut, so the influence would be limited. Only if the entirety of Canada was added would the US shift, and most definitely to the Left.
With time, Alberta and Saskatchewan would probably be opportunities for Republicans, but I don't know if anywhere else would.
Canada is becoming more right-wing unfortunately (IMO), so perhaps one day it will be very similar to the US.