A company called visualcalc provides a free Web site that helps citizens analyze the presidential race through a series of dashboards that chart the status and trends of the primary election. On the flip side, candidates in this year's historical race for the White House-for the first time either a woman or an African-American man will win the Democratic Party nomination to face likely Republican nominee John McCain-have similar tools to provide information that may help them attract those key undecided voters.
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