His downward spiral began when he stopped wearing western boots (http://www.nytimes.com/2014/07/03/us/rick-perry-gives-up-his-cowboy-boots.html) and started wearing those ridiculous thick framed glasses that all the so-called hipsters and cool people seem to be wearing these days. That says to me that he is not a leader, but a follower; more concerned about getting people to like him for his image than for his message.
He started wearing those glasses because he wanted everyone to think he was Barry Goldwater’s illegitimate son.
You know, I don't particularly like those glasses on him, either, but he can't exactly find a pair of big goggle-like 1980s aviators. What Perry is wearing is what's available now.