Poll: Majority of Republicans still doubt Obama's citizenship

A large majority of registered Republican voters still doubt President Obama's citizenship, according to a recent NBC News/SurveyMonkey poll.

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The poll found that 72 percent of registered Republican voters hold doubts about the president's citizenship. 

According to the poll, eight in 10 Democrats agree that Obama was born in the U.S. Only 27 percent of Republicans agree with that statement; 41 percent disagree.

Another 31 percent of Republicans said they neither agreed nor disagreed. 

The poll also distinguished between low-knowledge and high-knowledge Republicans.

It found that 40 percent of knowledgeable Republicans disagree that Obama was born in the U.S. Forty-two percent of lower-knowledge Republicans said the same.

The poll was conducted from June 27 to July 5 among 2,201 adults. The margin of error is 2.5 percent. It included 645 registered Republicans and those leaning Republican. The margin of error for that sample is 4.4 percentage points.

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