Poll: Clinton leads Trump by 8 points post-convention
© Greg Nash
 
Clinton has 50 percent support to Trump's 42 percent in the poll released early Tuesday. Clinton's support has grown while Trump's has decreased since last month's poll, which had her ahead by 1 point, 46 to 45 percent.
 
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Clinton's favorability among Democrats and Democratic-leaning voters also rose 6 points, to 80 percent, after the Democratic convention, while her unfavorables fell 5 points, to 19 percent.
 
It's the latest post-convention poll finding Clinton ahead. A CNN/ORC poll released late Monday found Clinton leading Trump by 9 points, 52 to 43 percent, while a CBS poll also released Monday found her up 6 points, 47 to 41 percent.
 
The new NBC/SurveyMonkey poll also found Clinton retaking the lead from Trump in a four-way presidential matchup with third-party candidates. Clinton leads Trump by 4 points, 42 to 38 percent, in that scenario. Libertarian nominee Gary JohnsonGary Earl JohnsonBiden broadened Democratic base, cut into Trump coalition: study New Mexico lawmakers send recreational marijuana bills to governor Judge throws out murder convictions, releases men jailed for 24 years MORE is at 9 percent and Green Party candidate Jill Stein is at 4 points. 
 
Trump was leading Clinton by 2 points in a four-way matchup last week.  
 
The new survey of 12,742 adults was conducted July 25–31 online with a margin of error of 1.2 percentage points.