WAUKESHA, Wisconsin (Reuters) - Down in opinion polls, Republican presidential nominee John McCain pressed his effort to raise doubts about Barack Obama's character on Thursday with a fresh attack on his Democratic rival's contacts with a former left-wing radical who became a college professor.
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- McCain again raises Obama's ties with 1970s radical (http://feeds.reuters.com/~r/Reuters/PoliticsNews/~ 3/vFamIQY3wM0/idUSTRE4932E920081009)

