One day after Gov. Dave Heineman said he would not run for Democratic Sen. Ben Nelson’s seat in 2012, Nebraska Attorney General Jon Bruning announced on Nov. 5 that he would. And he has formed an exploratory committee to begin raising funds. Both Heineman and Bruning won landslide reelection bids on Nov. 2. Nelson won a sweeping bid for reelection in 2006, garnering 64 percent of the vote over Republican challenger Pete Ricketts, son of the founder of TD Ameritrade. A poll commissioned by the Nebraska Republican Party and released Nov. 9 shows Nelson trailing Bruning by 15 percent. Republicans represented 56 percent of those polled, while about 48 percent of registered voters in the state are registered Republicans.