Montana Sen. Jon Tester has been assigned permanent office space, and he has some prestigious predecessors. The Democrat, who defeated Republican Sen. Conrad Burns last November, had been holing up with his staff in a temporary basement office since he came to Washington, D.C., in January. Next month, he will move into the Russell Senate Office Building, the oldest of the Senate office buildings. According to Tester’s office, former Democratic senators John Glenn of Ohio and Frank Church of Idaho once occupied the space. Church is the namesake for Idaho’s Frank Church River of No Return Wilderness. Tester has said the highlight of being sworn in as a senator was meeting Glenn, a former astronaut. “He looped around the earth when I was a second-grader,” Tester said last month.