(Las Vegas, NV) It’s shaping up to be a tight race for the U.S. Senate in Nevada. A new “Review-Journal/KLAS-TV” poll gives Democrat Shelley Berkley a one-point lead over incumbent Republican Dean Heller. That’s well within the poll’s margin of error. Berkley is very strong in Southern Nevada, while Heller’s support is solid in the northern part of the state. The outcome could help determine whether Democrats keep their majority in the Senate.