The Best Political Podcast

WASHINGTON (CNN) - The presidential nomination races in both parties remain unsettled less than three weeks before Iowa's caucuses when the first primary votes in the nation will be cast.

In Friday's The Best Political Podcast Jessica Yellin reports on Sen. Hillary Clinton's, D-New York, final push to make the case for her electability next November.

A new CNN/Opinion Research Corporation poll of likely South Carolina voters shows a new Republican front-runner and a tightening race among Democrats.

Dana Bash reports from the campaign trail in Iowa about the addition of a veteran GOP strategist as the Huckabee campaign's new national chairman and Special Correspondent Frank Sesno joins Wolf Blitzer in The Situation Room to take a closer look at a new campaign ad released by Sen. Barack Obama.

Plus, a look back at this week's top moments in the 2008 presidential race in Jennifer Mikell's Trail Mix.

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–CNN Associate Producer Martina Stewart