WASHINGTON – Democratic Senate candidate Lee Fisher faces a daunting 9-to-1 disadvantage in fundraising in his campaign against Republican Rob Portman in Ohio and has endured unexpected staff turnover, developments that have spread concern among national party leaders about his ability to remain competitive in the race. Fisher, the state's lieutenant governor, recently hired his third campaign manager while his campaign spokesman and researcher quit. Sluggish fundraising has left him badly trailing Portman, a veteran of President George W. Bush's White House and Cabinet. The Republican reported almost $8.9 million in his campaign account at the end of June; Fisher...