DFL State Senator Jerry Janezich is formally entering the race for U.S. Senate today. Janezich plans to make the announcement in his home town of Chisholm, emphasizing his strong base among organized labor and especially steelworkers. The Iron Ranger's entry brings the number of Democrats in the race to six -- with two more likely to join them in January. Some Democratic strategists think that's too many -- and there's already talk of another divisive, expensive primary fight.