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.
Vice President Joe Biden waits to conduct a mock swearing-in ceremony with Sen. Brian Schatz, D-Hawaii, in the Capitol's Old Senate Chamber, December 2, 2014. Schatz was sworn in to serve the remainder of his term since he was appointed to the seat after Sen. Daniel Inouye, D-Hawaii, passed away.