Again, I'm not sure whether you are trying to somehow be funny or don't realize this, but "defective" is simply the wrong word. You can't take words I use and replace them with other, non-synonymous, words and expect to be taken seriously. Sorry.
I'll do whatever I please with the language to make my own point... your obtuseness and defensiveness notwithstanding.
de·fec·tive /di-fek-tiv/ adjective
1. having a defect or flaw; faulty; imperfect: a defective machine.
2. Psychology. characterized by subnormal intelligence or behavior.
You have suggested those who are tired of choosing "between the lesser of two evils" and would seek another alternative are lacking in intelligence. My usage is an appropriate play on words.
pun /puhn/ noun
1. the humorous use of a word or phrase so as to emphasize or suggest its different meanings or applications, or the use of words that are alike or nearly alike in sound but different in meaning; a play on words.