Clinton's lead narrows in national poll
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Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonRep. John Katko: Why I became the first Republican lawmaker to support impeachment Can we protect our country — from our rulers, and ourselves? For Joe Biden, an experienced foreign policy team MORE's lead over Donald TrumpDonald TrumpIran convicts American businessman on spying charge: report DC, state capitals see few issues, heavy security amid protest worries Pardon-seekers have paid Trump allies tens of thousands to lobby president: NYT MORE has narrowed, according to the latest national poll.

Clinton leads the GOP nominee by 4 points, 48 to 44 percent, among registered voters in the NBC News/Survey Monkey tracking poll released Tuesday morning, down 2 points from last week.
Clinton's lead is even smaller in a four-way matchup. In that scenario, Clinton leads by just 2 points, 42 to 40 percent.
Libertarian nominee Gary JohnsonGary Earl JohnsonOn The Trail: Making sense of Super Poll Sunday Polarized campaign leaves little room for third-party hopefuls The Memo: Trump retains narrow path to victory MORE takes 11 percent in the poll, which was conducted amid his Aleppo gaffe, and Green Party nominee Jill Stein has 4 percent.
Clinton has seen a tightening of polls recently as she battles criticism over her "basket of deplorables" comment and the delayed release of her pneumonia diagnosis over the weekend.
Her lead in the NBC survey was 10 points about five weeks ago.
Since then, Trump has made up ground among independents who don't lean toward either major party.
Clinton and Trump have similar favorability numbers in the poll, though both are viewed unfavorably by a majority of registered voters.  
Thirty-eight percent have a favorable impression of Trump and 39 percent have a favorable impression of Clinton, while 59 percent view Clinton unfavorably and 60 percent view Trump unfavorably. 
The survey of 16,220 registered voters was conducted online Sept. 5–11 with an estimated margin of error of 1.1 percentage points.