California Republican U.S. Senate candidate Carly Fiorina has increased her lead over Democratic incumbent Barbara Boxer to five percentage points according to a new CBS 5 KPIX-TV poll released Thursday, which also shows gubernatorial candidates Democrat Jerry Brown and Republican Meg Whitman in a dead heat. The CBS 5 poll, conducted by the research firm SurveyUSA, showed Fiorina edging Boxer 47 percent to 42 percent, compared to a CBS 5 poll one month ago showing Fiorina over Boxer 47 to 45 percent. The poll results indicated Fiorina's support was essentially unchanged among men and women, young and old, white and...