Tight Clinton-Trump polls have skeptics: pollsters
http://www.usatoday.com/story/news/politics/elections/2016/05/27/hillary-clinton-donald-trump-polls/85029966/
Hillary Clinton faces a fierce general election battle against Donald Trump, according to recent polls, but one group remains unconvinced: pollsters.
Trump, who just secured the delegates needed to clinch the Republican nomination, is in a statistical tie with Clinton, according to the most recent ABC News/Washington Post and NBC News/Wall Street Journal polls.
In separate interviews, the pollsters who conducted those surveys cautioned that much of the tightening in the race comes from Trump consolidating the Republican vote. Meanwhile, Clinton remains in a contentious primary battle with Vermont Sen. Bernie Sanders.
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But history suggests these Sanders backers are likely to align with Clinton in the end, both pollsters said. Skepticism over the latest Clinton-Trump numbers is further fueled by a Bloomberg Politics survey showing Trump trailing Clinton by 7 percentage points among middle-income voters in the Rust Belt states that will be pivotal to Trump's chances in November .