Political handicapper Stu Rothenberg is playing catch up with Larry Sabato and Charlie Cook by revising his GOP House gain projections upwards.  Rothenberg now predicts Republicans will pick up 37-42 seats in November, up nine points from the 28-33 range he issued in his previous analysis.  Republicans need to win 39 House seats to unburden Mme. Pelosi of her Speaker's gavel.