The poll, which was released Tuesday, showed Tester with a strong approval rating, considering how incumbents across the country are seeing their ratings drop. Tester had a 51 percent approval rating, while 39 percent disapproved. Comparatively, 41 percent approved of the job being done by Sen. Max Baucus (D-Mont.), who is up for re-election in 2014.
Rehberg, who is the at-large Congressman, earned a 44 percent approval and 45 percent disapproval rating.
The survey of 819 registered voters was conducted Thursday to Sunday and had a 3.4-point margin of error.
Former Sen. Scott Brown, R-Mass., candidate for U.S. Senate in New Hampshire, holds his hand over his heart during the singing of the national anthem as he waits to take the stage for his town hall campaign rally with Sen. John McCain at the Pinkerton Academy in Derry, N.H., on Monday, Aug. 18, 2014.