The battle over the confirmation of Associate Justice Brett Kavanaugh to the U.S. Supreme Court has helped Republicans in the short term more than Democrats. Since the stunning “thumbs down” moment by the late Senator John McCain, R-Ariz., Republican enthusiasm has ebbed-and-flowed, while Democrats consistently reported higher levels of interest. For Republicans, the challenge this election cycle was two-fold: combating voter complacency and maintaining the more moderate wing of their coalition, specifically women, and even more specifically, Republican women. There was no downside for the GOP. They needed to increase enthusiasm, something the controversy over the confirmation of Justice Kavanaugh...