From George Lakoff: People do not necessarily vote in their self interest.

[elleng]

They vote their identity. They vote their values. They vote for who they identify with.

https://www.facebook.com/photo/?fbid=550189609844724&set=a.281306073399747

[Ferrets are Cool]

1. They vote for a letter in the Alphabet.

To put it very simplistically.

[JI7]

2. He just figured this out ? And some consider being anti gay

as their self interest. Along with other bigotry.

[cilla4progress]

3. So, tribal,

basically.

[Mike_in_LA]

4. And also defensively

Hegemony. For instance, the idea that simple equality means you lose something. It works.

[Karadeniz]

5. When they vote Ego values, guaranteed Republican.