(CNN) - The countdown to the March 4 primaries continues as Hillary Clinton, Barack Obama, John McCain, and Mike Huckabee make their pitches to voters in Ohio, Texas, Rhode Island, and Vermont.
In the latest episode of CNN=Politics Daily, Sen. Barack Obama picks up an endorsement from former rival Sen. Christopher Dodd. Senior Political Correspondent Candy Crowley reports on the endorsement as well as the latest from Sen. Clinton.
John McCain ended up in the awkward situation of having to distance himself from comments made by a supporter who introduced him at a campaign event Tuesday. Chief National Correspondent John King was there and reports on the supporter's controversial comments and McCain's response.
The recent release of three new national polls shows how the Democratic nomination race has changed since voting began in Iowa at the beginning the year. Senior Political Analyst Bill Schneider reports on the new data - viewed together as a poll of polls - and the issues driving voters' views and preferences.
Finally, Howard Kurtz, the host of CNN's Reliable Sources, reports on the media's coverage of Sen. Obama.
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–CNN Associate Producer Martina Stewart
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