Primary re-does costlyPOSTED: March 8, 2008 Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., left, get a hug from Pennsylvania Gov. Ed Rendell as she in introduces at a campaign stop for a low dollar fundraising reception at the Lisner Auditorium at George Washington University, in Washington, Monday, Feb. 25, 2008. (AP Photo/Carolyn Kaster) LANSING (AP) — The biggest stumbling block to doing over the Democratic primaries in Michigan and Florida may be the cost. Michigan Democratic Chairman Mark Brewer estimates it would cost the state party $8 million to $12 million to set up party-run election sites and allow...