Cardston was a provincial electoral district in southern Alberta, Canada.The riding was created in when Alberta first became a province in 1905. The riding has always occupied the most southern portion of the province along the Canada / United States border. In 1993 the borders of the riding of Pincher Creek-Crowsnest shifted south into Cardston, and the riding was renamed Cardston-Chief Mountain. The riding was named after the town of Cardston and this region is considered one of the most conservative in the province.