Isn't Dallas more liberal than Saskatoon? I'm only guessing here, I know very little about Saskatoon.
I wouldn't say so. Dallas is in Texas after all (Austin notwithstanding).
Saskatoon as a whole is right of centre these days, but it and Regina are the most left wing parts of the province. Saskatchewan used to be very left wing, it was the first jurisdiction in North America with a socialist government.
Dallas like most big Texas cities is quite liberal. Austin really isn't any different than Dallas. Once you step out of the city of course things change, but that happens in Austin too.