Clinton garners 37 percent support in the Democratic field, with Sen. Bernie Sanders (I-Vt.) behind her at 27 percent and Vice President Biden — who has not declared a White House bid — at 20 percent.

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Clinton’s total is 10 percentage points down from the same poll in August, while Sanders’s is static and Biden’s is up 6 points.

In head-to-head polls, Clinton ties with Republican presidential front-runner Donald Trump at 48 percent each.

Faced with other top GOP contenders, Clinton trails retired neurosurgeon Ben Carson 51 percent to 46 percent and trails former Florida Gov. Jeb Bush 49 percent to 47 percent.

The poll of 1,012 adults overall — 395 Democrats or Democratic-leaning voters — was conducted Sept. 4-8. It has an overall margin of error of plus or minus 3 percentage points, and a margin of error among Democratic voters of plus or minus 5 percentage points.