Since this is a tracking poll, it's likely that Obama is now ahead.
By John Whitesides, Political Correspondent
MANCHESTER, New Hampshire (Reuters) - Democrat Hillary Clinton and Republican John McCain hold shrinking leads in New Hampshire three days before the state's presidential nominating contest, according to a Reuters/C-SPAN/Zogby poll released on Saturday.
Most of the polling in the four-day tracking survey was taken before the Iowa caucuses on Thursday, when Democrat Barack Obama and Republican Mike Huckabee sailed to wins in the opening test of the presidential campaign.
In New Hampshire, Clinton's lead over Obama in the Democratic race shrunk slightly to four points, 32 percent to 28 percent. John Edwards, a former North Carolina senator who finished second in Iowa, was in third place with 20 percent.
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