The most important person to watch at Thursday's debate? Try Jeb Bush As the political world remains transfixed on Donald Trump, here's maybe your most important storyline heading into tomorrow's first GOP debate: No one has more riding on a solid performance than Jeb Bush does. After all, Bush has had a rough last week. There was his "I'm not sure we need a half a billion dollars for women's health issues" line, which Hillary Clinton eagerly pounced on. There was the GOP criticism that Jeb didn't fight back after Clinton attacked him on Medicare and Obamacare at last Friday's...