Michigan rally will see Gephardt endorse ex-rival Kerry By RON FOURNIER and LEIGH STROPE The Associated Press 2/5/2004, 11:49 p.m. ET NEW YORK (AP) — John Kerry secured the endorsement of former presidential rival Dick Gephardt on Thursday, a blockbuster embrace that paid immediate dividends for the Democratic front-runner's bid to rally organized labor behind his candidacy. Kerry spokesman David Wade said the Missouri lawmaker will give Kerry his backing on Friday in Warren and Flint, Mich. Michigan Gov. Jennifer Granholm and its U.S. senators, Carl Levin and Debbie Stabenow, have endorsed Kerry. The state holds its Democratic caucuses Saturday....