Late last week the premier polling site, FiveThirtyEight, tweeted somberly: “I don't think people fully comprehend how scary the generic ballot numbers are for Democrats.” The biggest sway away from Democrats is coming from independent voters. The latest Gallup results give Republicans the broadest spread over Democrats in the history of generic-ballot polling. It’s also the first time the GOP has hit the magic 50 percent in the history of Gallup’s generic ballot. "For independent voters, it's like the rock-paper-scissors game,” says Democratic strategist Steve McMahon. “They want bi-partisan solutions and smart policy. But right now, a 'no' to more...