Poll: Hillary tops Trump by just 3 points
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Former Secretary of State Hillary ClintonHillary Diane Rodham ClintonRepublican Ohio Senate candidate slams JD Vance over previous Trump comments Budowsky: Why GOP donors flock to Manchin and Sinema Countering the ongoing Republican delusion MORE (D) leads real estate mogul Donald TrumpDonald TrumpGOP grapples with chaotic Senate primary in Pennsylvania ​​Trump social media startup receives commitment of billion from unidentified 'diverse group' of investors Iran thinks it has the upper hand in Vienna — here's why it doesn't MORE (R) by just 3 percentage votes among registered voters in a hypothetical matchup, according to a new poll.

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Washington Post/ABC News pollsters found 46 percent support for Clinton, compared with 43 percent for Trump.

The Democratic front-runner has a wider lead over her Republican counterpart among all adults, 51 percent to 39 percent.

However, Trump enjoyed a slight edge over Clinton in terms of cross-party support. Just 14 percent of Republican registered voters said they would lean toward voting for Clinton, while 15 percent of Democrats said they were leaning more toward Trump.

Trump has surged to the top of the GOP field, with 29.8 percent support, according to a RealClearPolitics average of polling.

Another poll released Sunday shows him atop the crowded 2016 Republican presidential field in California.

The USC Dornsife/LA Times Poll found that 24 percent of Republicans said they would support Trump.

That same poll found Clinton leading Sen. Bernie Sanders (I-Vt.) in California, 42 percent to 26 percent.  

But Sanders has taken an edge over Clinton in some critical early states. A CBS News poll out Sunday found Sanders surging to a 10-point lead over Clinton in Iowa, and a 2- point lead over Clinton in New Hampshire. 

The Washington Post/ABC News poll of 1,003 adults, conducted by telephone September 7-10, 2015, has a 3.5 percent margin of error.

-- This story updated at 3:01 p.m.