If you thought Donald Trump’s boisterous debate performance and subsequent comments about Fox News’ Megyn Kelly might hurt his standing in the polls, you might be very wrong. In the first major poll to be released since Thursday night’s debate, NBC News and Survey Monkey found Trump holding onto his first place position with 23% of the hypothetical vote. Jeb Bush and Scott Walker, who were each at 10% in the same survey a week earlier, both dropped three points to 7% each, tied for a disappointing fifth place. Ted Cruz saw the biggest post-debate bump, up seven points to...