primaries

In an attempt to stop Barack Obama from getting into the White House, a rightwing radio presenter has been encouraging Republican supporters to vote for Hillary Clinton in the Democratic primaries in the hope of getting the supposedly weaker candidate nominated to face John McCain. Read more...

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Photos: Cheryl Biren-Wright and "serlingrod"

With neither Barack Obama or Hillary Clinton reaching the minimum amount of delegates to be elected presidential nominee of the Democratic party, the final decision will be left to around 800 party members known as "superdelegates". Does that mean months of campaigning, vote counting and bickering were wasted on less than one percent of the Democratic electorate? A superdelegate answers. Read more...

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A polling station in Cumberland County, Pennsylvania. Photo by Sandra Miller, a farmer who's following the primaries for the Observers.

Hillary Clinton won the Democratic primary in Pennsylvania yesterday, throwing her back into the nomination race. Rather than speculate the details of the results, we give the account of Mike Ruddy, a young blacksmith and one of the much-talked- about "blue-collar workers", who voted for the first time yesterday. Read more...

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Campaigning for the American presidency just got nastier in the run-up to the Pennsylvania primary on Tuesday. The only candidate to keep out of the campaign video catfight is Republican candidate John McCain... although the ageing conservative hasn't managed to avert attacks fired in his direction. Here's our selection of below-the-belt campaign videos.

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© ABC News

Democrat candidates Barack Obama and Hillary Clinton faced each other for the last time before next Tuesday's Pennsylvania primary in a televised debate last night. Our Observers in the state react to the candidates' ideas on weapons, the economy, and Obama's apparent elitism. Read more...

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In a speech on Tuesday Barack Obama declared that he is in favour of talking to Iran - something that would constitute a huge shift in the policy of the American diplomacy. Abolhassan Banisadr, the first ever elected Iranian president, today exiled in France, reacts to the announcement. Read more…

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Tension seems to be mounting between supporters of Hillary Clinton and Barack Obama. A post on the political blog Daily Kos generated a firestorm of controversy. Read more…

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Barack Obama might enjoy the support of stars Robert De Niro, Scarlett Johansson and George Clooney, but film favourite Jack Nicholson decided to side with Hillary Clinton in a video clip, helping to pull the “doomed” democrat candidate out of what seemed like a political grave only last week. Clinton’s wins in Ohio and Texas come after 11 consecutive defeats, and an endorsement video from Nicholson. Read more and see the clip, along with the Obama takeoff, of course.

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When one blogger fine-combed Hillary Clinton’s last campaign clip (below), she thought she had found something incredible. On the pyjamas of the sleeping child who appears at the beginning of the clip, the letters “NIG” are printed. A racist message from the ex-first lady? Read more…

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The democratic blogosphere hasn’t given up on the idea of an Obama – Clinton ‘Dream ticket’; an agreement between the two candidates that would steamroll over the Republicans. Having an Afro-American and a woman as president and vice president is certainly a dream for Democrat activists, but could it be a dream come true? Read more…

The contributors