2010Final results
2010 election for Montana's at-large District
U.S. House · Montana
Denny Rehberg (R) won with 60.4% of the vote, defeating Dennis McDonald (D) by 26.6 points.
Denny RehbergRepublican · winner
60.4%217,696
Dennis McDonaldDemocrat
33.8%121,954
Mike FellowsLibertarian
5.7%20,691
360,341 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 2010
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Dennis McDonaldDenny Rehberg
$333.3K
Raised by the campaign
$1.4M
$333.3K
Spent by the campaign
$1.4M
$0
Cash on hand
$553.2K
Campaign money: FEC, through Dec 31, 2010.
Source: FEC campaign filingsUpdated Dec 31, 2010