Sarah Palin says she could defeat President Barack Obama if she were to seek the White House in 2012.

In an excerpt of an ABC News interview released Wednesday, the 2008 Republican vice presidential nominee says she is considering a presidential run. When asked directly if she thought she could defeat Democrat Obama, the former Alaska governor replied, "I believe so."

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An Associated Press-GfK poll this month found Palin the most polarizing of the potential 2012 Republican presidential candidates. The poll says 46 percent of Americans view her favorably, 49 percent unfavorably, and 5 percent do not know enough about her to form an opinion.

Yet among adults who identified themselves as Republicans or Republican-leaning independents, 79 percent view her favorably.

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