A survey suggests that former Alaska Gov. Sarah Palin's favorability rating has dropped among likely Republican voters in Iowa.

The Des Moines Register's new Iowa Poll says the rating has dropped to 65 percent in a poll taken earlier this month, compared with 71 percent in November 2009.

The former vice presidential candidate has not publicly announced whether she'll run for president next year.

The poll of 800 Iowa adults was conducted Feb. 13-16 by Selzer & Co. of Des Moines. The margin of error is plus or minus 3.5 percentage points. The results include responses from 189 Republican likely voters, which have a margin of error of plus or minus 7.1 percentage points.

Representatives of Palin's political action committee declined to comment on the new poll.

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