Particularly grating to many of us is the superficial dislike of some to regional accents. Rick Perry has a west Texas accent, for heaven’s sake! I’d rather hear that than harsh New York or Boston accents.
If your choice of candidate is based on how they pronounce words, it’s your loss.
No one had a problem with Perry’s regional accent when he burst onto the scene at the very top of the top tier, did they? It wasn’t until he had to articulate his positions in debate that he floundered. Don’t go getting all defensive and regionalist. We’re (almost) all Americans here. Perry’s West Texas accent has little to do with his current predicament.
Perry has a terrific record in TX, from what I can tell, but he has to be able to articulate it clearly in any damned accent if he wants to be POTUS. It’s really that simple.