Nearly 20 percent of all voters and 30 percent of Republicans do not believe President Barack Obama has proved he was born in the United States, even after he released his long-form birth certificate, a new IBOPE Zogby interactive survey finds.
IBOPE Zogby, based in Utica, N.Y., said 16 percent of all voters in the April 29-May 2 survey of 2,020 likely voters doubt that the president was born in the U.S.A. The survey was conducted after Obama released the birth certificate and addressed the news media on the topic.
Demographic groups besides Republicans expressing the highest levels of doubt about Obama's birth in the U.S. are conservatives at 34 percent, and those without a college degree (21 percent) vs. those with a degree (11 percent).
The poll, which has a margin of error of plus or minus 2.2 percent, included a sampling of IBOPE Zogby International's online panel, which is representative of theU.S. adult population. Slight weights were added to region, party, age, race, religion, gender, and education to reflect the population more accurately.
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