DENVER (Reuters) - Democratic presidential candidate Barack Obama faces a challenge this week to try to heal a party rift, draw a sharp contrast between himself and Republican rival John McCain and back up his soaring oratory with specifics of what he would do if he wins the White House.
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- Obama aims to heal rift, detail policies at convention (http://feeds.reuters.com/~r/Reuters/PoliticsNews/~ 3/373878505/idUSN1928744420080825)