Clinton up by 12 points in ABC News poll
© Greg Nash

Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonTrump adds to legal team after attacks on Mueller Press: You can’t believe a word he says Feehery: March Madness MORE has a double-digit lead in the inaugural ABC News 2016 tracking poll released Sunday morning.

Likely voters give Clinton the edge over Republican nominee Donald TrumpDonald John TrumpLieu: There will be 'widespread civil unrest' if Trump fires Mueller Attorneys for Trump, Mueller hold face-to-face meeting to discuss potential interview topics: report Trump tariffs not helpful for nuclear talks, South Korea says MORE 50 percent to 38 percent. Libertarian nominee Gary JohnsonGary Earl JohnsonWithout ranked voting, Pennsylvania's slim margins hide voters' preferences If weed is no longer a crime, why are people still behind bars? Gary Johnson: Trump admin marijuana policy shift could cost him reelection MORE has 5 percent, and the Green Party's Jill Stein has 2 percent.

Clinton is at her highest level of support in any ABC News/Washington Post poll, while Trump is at his lowest, ABC News noted.

Pollsters found that 69 percent of likely voters disapprove of Trump’s response to accusations about his treatment of women.

More than half, 59 percent, also reject the GOP nominee’s claim that the election is rigged against him, and 65 percent disapprove of his comments that he may not accept its results.

The poll of 1,391 adults, including 874 likely voters, was conducted Oct. 20–22. Its margin of error is 3.5 percentage points.

Clinton leads Trump by almost 6 points, 47.7 percent to 41.9 percent, according to a RealClearPolitics average of national polling.

— This report was updated at 9:27 a.m.