041519 1204 The political news website Roll Call has changed its rating of Iowa’s second congressional district from solid Democratic to a toss-up. After long-time Representative Dave Loebsack announced he’s retiring, the southeast corner of the state may not stay reliably democratic. That’s according to Central College political scientist Andrew Green. 0415green: 16 “It has to be considered a toss-up district. The fact that…as I…the fact that Congressman Loebsack won re-election on the same