Just about a third of Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE supporters say they will most likely accept the presidential election result if Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE wins, while most say they'll have serious doubts, according to a new poll.

Thirty-five percent of those who support Trump, the Republican nominee, say they will most likely accept the results if his Democratic rival wins, according to an Associated Press-Gfk poll, while 64 percent say they'd likely have serious doubts about the outcome.

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By comparison, 69 percent of Clinton supporters say they'll accept the outcome if Trump wins, while 30 percent say they are more likely to have doubts about the result if she loses.

In all, more than three-quarters of likely voters, 77 percent, say they'll accept the legitimacy of the result if Trump wins, and 70 percent say they'll accept the election result if Clinton wins.

Trump has ramped up his claims in recent weeks that the election is being "rigged" against him, arguing that media outlets are pushing for a win for his Democratic rival.

During the third presidential debate last week, Trump declined to say whether he would accept the result of the election. Instead, Trump said he would keep the country in "suspense" — comments for which he received backlash.

At a rally earlier this month, the GOP nominee declared he would accept the result of the election if he wins, adding later he'd accept a "clear" election result.

The AP-Gfk poll found that Trump's comments have appeared to resonate with his supporters.

The poll found that 56 percent of Trump supporters think there's a great deal of voter fraud, 36 percent think there is some, and only 6 percent think there's hardly any.

Among those supporting Clinton, 64 percent think there's hardly any voter fraud.

Overall, 27 percent of likely voters think there is a great deal of voter fraud.

The poll of 1,546 adults and 1,212 likely voters was conducted Oct. 20–24 with an overall margin of error of 2.75 points and a margin of error of 3.1 points for likely voters.