| − | Democrat [[Jon Tester]] is the incumbent. He will face Republican [[Denny Rehberg]]. As of August 21, Rehberg leads 47% to 43%.<ref>[http://www.rasmussenreports.com/public_content/politics/elections/election_2012/election_2012_senate_elections/montana/election_2012_montana_senate Election 2012: Montana Senate] rasmussenreports.com, retrieved September 21, 2012</ref> | + | Democrat [[Jon Tester]] is the incumbent. He will face Republican [[Denny Rehberg]]. As of October 22, Rehberg and Tester are tied at 48% each according to a Rasmussen poll.<ref>[http://www.rasmussenreports.com/public_content/politics/elections/election_2012/election_2012_senate_elections/montana/election_2012_montana_senate Election 2012: Montana Senate] rasmussenreports.com, retrieved October 22, 2012</ref> |