The American Civil Rights Union’s Robert Knight, who has been encouraging Republicans to run on social issues such as hostility to abortion rights and opposition to LGBT equality, now thinks the GOP should campaign on denying the existence of evolution.

Citing a Pew poll which shows that belief in evolution has plummeted in the GOP and is now shared by only a minority of Republicans, Knight told the American Family Association’s One News Now that “Republicans have a great opportunity” to expose the “lies that liberals have told over the years” and begin “questioning evolution more than ever.”

He also warns that a belief in evolution “leads to terrible things like socialism and communism and fascism and Nazism and the more extreme forms of liberalism in this country.”