(CNN) – While the release of President Barack Obama's so-called "long form" birth certificate has increased the number of Americans who think the president was born in the United States, 17 percent continue to believe that he was born in another country, according to a new CNN/Opinion Research Corp. poll.
But Republicans, in particular, now seem more willing than ever to throw in the towel and move on to other topics: 80 percent of all Americans now believe Obama was definitely born in the U.S. - up 8 points since March - with most of that movement coming among Republicans.
In March, a bare majority of those in the GOP believed that Obama was born in the U.S.; now that is up by 17 points, to 69 percent - still much lower than the number of independents (80 percent) and Democrats (89 percent) who feel that way.
Older Americans and those with college educations also seem most likely to have been swayed by the release of the birth certificate.
The CNN poll follows a recent Washington post survey that found 77 percent of Americans definitely believed Obama was born in the United States.
The poll surveyed 1,035 adult Americans by telephone from April 29-May 1 2011. It carries a sampling error of plus or minus 3 percentage points