Content Types in Poll choice fields

Hi!
To create an poll you need to type all the time the choices for the poll, but if you want to use a pre-created Content Type to use in choices?

Example:
I have a Content Type named "Characters" and I want to know which of these characters pre-created my users prefer.

But why Content Types? Flexibility of the Fields, Display Suite and data re-use.

If you read this, thank you!