Trump has a wide lead against the GOP field.
This is an election about the future.
Phillips is the heir to the Phillips liquor fortune who has launched his own gelato and coffee businesses.
Dean PhillipsTom Williams/CQ-Roll Call, Inc via Getty Images
Marianne Williamson also is challenging Biden for the nomination.
Phillips plans to enter the New Hampshire primary today and launch a bus tour.
A write-in campaign for Biden is possible.
In 1992, Pat Buchanan challenged President George H.W.
Bush, with Bush winning New Hampshire but Buchanan garnering a better-than-expected 37.5% of the vote.
In 1980, Senator Ted Kennedy challenged President Jimmy Carter, drawing 37.3% to Carters 47%.
