Republican Party of Florida Chairman David Bitner said Wednesday he would resign because of health concerns, a surprising move that sent the party looking for its fourth leader in less than two years. "At the time I first discussed my health with you, I also made a promise that I would serve as the Chairman of the Republican Party of Florida only as long as I could do so with all the energy and attention this position deserves," Bitner, who revealed in April that he had been diagnosed with ALS, commonly known as Lou Gehrig's disease, wrote in a letter...