1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane.
When the moderator asked nine candidates to raise their hands if they "didn't believe in evolution," three hands went into the air
By the dictionary definition you would have to believe in it. Who believes there is no process of formation or growth? Now it could be interpreted as a question about the theory of evolution but that is different. It is not just a quibble the difference is similar to "do you believe in justice" and "do you believe in justice in North Korea".
Suppose we asked a group of Presidential candidates if they believed in the existence of atoms, and a third of them said "no"?
What is the current view on this? do electrons exist when they are not being measured?