(CNN) An ad airing on Missouri radio attempts to rally voters against incumbent Democratic Sen. Claire McCaskill by warning that she supports "teaching about Islam" in schools.

"After all, if our kids think all religions are the same, they're not likely to choose any of them," a male narrator says in the ad, a partial recording of which was reviewed by CNN.

The ad then features a child in conversation with her father, saying, "But, Dad, my teacher says Christians, Jews and Muslims all worship the same God. What's wrong with that?"

"What's wrong, honey, is that it's not true," her father responds.

The narrator concludes by urging voters to "vote no on Claire McCaskill and her Democrat agenda. Vote yes for our children."

Read More