The first primary of the 2018 midterm elections, in Texas, is barely eight weeks away. It’s time to ask: Will the Russian government deploy “active measures” of the kind it used in 2016? Is it possible that a wave of disinformation on Facebook and Twitter could nudge the results of a tight congressional race in, say, Virginia or Nevada? Will hackers infiltrate low-budget campaigns in Pennsylvania and Nebraska, and leak their e-mails to the public? Will the news media and voters take the bait? By most accounts, the answer is likely to be yes—and, for several reasons, the election may prove to be as vulnerable, or more so, than the 2016 race that brought Donald Trump to the White House. Part of the explanation is political: the 2018 midterms are shaping up to be extraordinarily competitive. Consider the spectacle currently unfolding in Virginia. Before the most recent election, on November 7th, Republicans controlled Virginia’s House of Delegates by a comfortable sixteen-seat majority. In a wave of Democratic wins, propelled by the state’s highest turnout in twenty years, the Republican majority nearly evaporated. Final control of the House now rests on the results of the 94th District, which is deadlocked at 11,608 votes apiece. The Virginia Board of Elections planned to draw the name of a winner out of a pitcher, a tactic unused in Virginia in more than four decades, but, on December 26th, the state postponed the plan, because of pending court challenges. If the Republican incumbent David Yancey loses to the Democrat Shelly Simonds, the House will be tied fifty-fifty, and the two parties will share power.