CINCINNATI -- Hamilton County Commissioner Pat DeWine and State Representative Tom Brinkman are the first to officially announce their candidacy for the 2nd congressional seat, News 5 reported. DeWine was elected Hamilton County Commissioner last November. He previously served on Cincinnati City Council. Brinkman is a state representative. Both are Republicans. Several others are expected to join the race to fill Rob Portman's seat, assuming the Senate confirms Portman's nomination as U.S. trade representative. Primaries could be held as early as May with a special election possible in August. Gov. Bob Taft will set the date once after Portman vacates...