Because they're both dumb and incompetent. When I watch some of the other ones I disagree with them but obviously they've accomplished something in their careers or can think on their feet or just about anything. Walker and Rubio just can't.
Walker may be a lot of things. But incompetent is not one of them. You may not agree with his dismanteling of the public sector unions, but lack of accomplishments is not the reason he is disliked.
Thank you. We need to dispel with this fiction that Scott Walker doesn't know what he's doing. He knows exactly what he's doing.