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.

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.