John McCain has refused to ever criticize Sarah Palin, to ever admit there was anything wrong about her choice. He has been capital "L" loyal to her in such an unwavering way, even has his entire party has turned against this is decision that he made for obvious reasons. He has been unflinchingly loyal to her.
It is about something personal and specific, because when the John McCain campaign in 2008 decided to elevate Sarah Palin from total obscurity to make her his vice presidential running mate, they knew they were making a big strategic gamble.They knew they were taking a big risk and it turned out in the end to be a bad choice. It hurt John McCain`s chances.