Sen. Ben Nelson (D-Neb.) would start his 2012 reelection race in a weak position if Nebraska Attorney General Jon Bruning wins the primary, according to a new poll. The survey by Republican firm Magellan Strategies put Nelson 6 points behind Bruning in a general election. But pitted against Don Stenberg, another Republican in the race, Nelson is in a statistical tie. He bests Nebraska state Sen. Deb Fischer (R) by 6 points. Another cause for concern for Nelson, who has not yet announced whether he will seek reelection, is his 36 percent approval rating, which dwarfs the 51 percent who...