Article snippet: A Democratic advantage in preference for the 2018 midterm elections fades to insignificance among the most likely voters in the latest ABC News/Washington Post poll, signs of the Democrats’ enduring challenges in turning out their voters in off-year contests. In a hypothetical national ballot, Democratic congressional candidates hold a robust 11-point lead over their GOP counterparts, 51-40 percent, among registered voters overall. But winnow down to those who say they voted in the last midterms and are certain to do so again and the contest snaps essentially to a dead heat, 48-46 percent. See PDF with full results here. That’s in part because the 2014 midterms were so successful for the Republicans, who won the Senate and padded their House majority that year. But past voting is the best predictor of future voting, making it clear that the Democrats will have to change the dynamic to prevail in the next midterms a year off from now. It may not be easy. For one thing, despite President Donald Trump’s historic unpopularity, almost as many Americans say they’ll vote in 2018 to show support for Trump as to show opposition to him, 22 versus 26 percent, with half saying he won’t be a factor. Indeed 57 percent of Republicans say they’ll vote to show support for Trump, while fewer Democrats, 46 percent, intend to send a message against him. Further, among the results of this poll, produced for ABC News by Langer Research Associates: Just 27 percent of Am... Link to the full article to read more