Redford took aim at Wildrose leader Danielle Smith's stance that the science behind whether human activity causes global warming has not been settled.
She questioned how someone who denies climate change can tout Alberta's energy industry on the world stage.
On a campaign stop in Calgary, Redford says the strong turnout in advanced polls shows Albertans are engaged in this election.
She says some who may not have been politically active in the past are now.
Redford, who is trying to extend the governing Progressive Conservatives' 40-plus year dynasty, says the outcome will tell the rest of Canada who Albertans are.
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