The democrats’ unprecedented losing streak continues. As Rich Lowry noted a couple of days after Donald Trump’s victory over Hillary Clinton, Barack Obama’s chief legacy is the total collapse of the modern Democrat Party. In the handful of special elections this year—including in Georgia and South Carolina on last Tuesday—nothing has happened to change that. ... Nevertheless, as the recent war on President Trump and the more distant—but certainly recent enough—debate on marriage reveal, U.S. liberals don’t necessarily need to win elections to further their leftist agenda. In fact, as most any sentient political observer of the American scene is...