Really? Try reading some polls, Tom
Depending on question wording, polls show about 20% to 40% of the public do not think that evolution should be taught in public schools. A solid majority think that creationism should be taught in some form. Only around 30% of the public are in favor of evolution only.
http://people-press.org/commentary/display.php3?AnalysisID=118
Among self-identified conservatives in the most recent Pew poll, 51% favored teaching only creationism in public schools. That rose to 67% among evangelical Christians.
http://people-press.org/reports/tables/254.pdf