Most people form their political opinions based on their self image, not on rational thought. I.e.
"I'm an artistic creative person" -> "I'm a Democrat" -> "I support abortion."
Or
"I'm a good Christian" -> "I'm a Republican" -> "I support lower taxes."
How does this relate to vouchers?
1. The beneficiaries of the current monopoly oppose vouchers due to simple greed.
2. Their political allies try to protect them, to keep votes/campaign contributions coming.
3. "People like me (e.g. political allies of the teachers union) oppose vouchers. Therefore, I oppose vouchers. Only bad people on the other side of the fence support them."
"I'm an artistic creative person" -> "I'm a Democrat" -> "I support abortion."
Or
"I'm a good Christian" -> "I'm a Republican" -> "I support lower taxes."
How does this relate to vouchers?
1. The beneficiaries of the current monopoly oppose vouchers due to simple greed.
2. Their political allies try to protect them, to keep votes/campaign contributions coming.
3. "People like me (e.g. political allies of the teachers union) oppose vouchers. Therefore, I oppose vouchers. Only bad people on the other side of the fence support them."