Democratic contender Barack Obama campaigning in Iowa

January 3rd 2008 – Tonight is the night of the Iowa caucuses, in which the American state of Iowa will choose who to send to the party conventions in the summer. Those conventions in turn will decide who to run in the November election for president. Iowa is the first state to vote. Candidates who do poorly in Iowa and the other early states will have a hard time carrying on.

The caucuses start at 1900 local time (0030 GMT) and will last for several hours.

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