(CNN) - A new CNN/Opinion Research Corporation poll shows a majority of voters view Michelle Obama in a favorable light, while Cindy McCain is less known.
Those numbers contradict an AP/Yahoo poll released earlier Wednesday that showed more voters viewed Michelle Obama negatively than positively.
According to the new poll, 51 percent of registered voters report a favorable view of the presumptive Democratic presidential nominee's wife while 28 percent hold an unfavorable view. Just over 21 percent did not express an opinion.
Meanwhile, 39 percent of registered voters hold a favorable view of John McCain's wife, Cindy, while 23 percent report an unfavorable rating. The poll also shows she is considerably less known than Mrs. Obama - nearly 40 percnet report having no opinion of her.
"Don't read anything into the fact that Michelle Obama's favorable rating is higher than Cindy McCain's - Obama's unfavorable rating is higher than McCain's as well, and both of those measures are simply due to the fact that Obama is better known than McCain," CNN Polling Director Keating Holland said.
The poll, conducted on June 26-29, surveyed 906 registered voters and carries a margin of error of plus or minus 3.5 percentage points.
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