Perhaps it's time to re-institute literacy tests for American voters.

Science literacy tests!

26% think the Sun revolves around the Earth¹

40% believe the Earth has existed for 10,000 years or less³

45% believe that astrology is a science¹

49% think antibiotics kill viruses¹

37% believe God created humans in their current form²

77% believe angels are real⁴

 [If you really want to be disheartened, Google 'encounters with angels'.]

¹link  ²link  ³link  ⁴link