dittohead

A devotee of Rush Limbaugh, his radio program, or his opinions.

Being a dittohead means you think that Rush is the beginning, middle, and end of political knowledge and information, and that that knowledge and information always show that Republicans are right, liberals (and everyone else) wrong. Dittoheads believe “if only you understood politics, you'd be a Republican.”

Someone who mindlessly agrees with an idea, especially one who agrees only as a supporter of the person who expressed it.