A new poll shows a suddenly tighter race between U-S Senator Jim Bunning and his Democratic challenger, Daniel Mongiardo. The Bluegrass Poll indicates that Bunning is apparently leading by six percentage points. The poll is in today's editions of The Courier-Journal of Louisville. The difference between the candidates is within the margin of error. That means the race could be tighter, or Bunning's lead could be larger than the poll indicates. The poll's margin of error is plus or minus three-point-seven percentage points. A similar poll taken in September showed Bunning with a 17-point lead. The new poll was conducted...