Gingrich claims 'huge' grassroots network
Candidate speaks on night of Mich., Ariz. primaries
POSTED: 8:32 PM PST February 28, 2012
GOP presidential hopeful Newt Gingrich, addressing supporters in Carrollton, Ga., as primary voting ended in Michigan and Arizona on Tuesday evening, tried to contrast his fundraising with that of Mitt Romney.
