Here we go again, Rudy Giuliani edition.

A new CNN/Opinion Research Corporation national poll shows the former New York City mayor atop the slow-forming Republican primary field.

The survey shows Giuliani getting 16 percent of independents and Republicans, with nominal frontrunner Mitt Romney a point behind at 15 percent.

Sarah Palin gets 13 percent.

Neither Palin nor Giuliani are sure things for the 2012 election, and their perches in the new poll — the first taken by the news organization since Mike Huckabee, Mitch Daniels and Donald Trump bowed out — speak to how wide-open the race is.

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