2004Flipped from RepublicanFinal results
2004 election for South Dakota's at-large District
U.S. House · South Dakota
Stephanie Herseth (D) won with 53.4% of the vote, defeating Larry Diedrich (R) by 7.4 points, a seat Republicans won last time.
Stephanie HersethDemocrat · winner
53.4%207,837
Larry DiedrichRepublican
45.9%178,823
Terry L. BegayLibertarian
0.7%2,808
389,468 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 2004
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.
Stephanie HersethLarry Diedrich
$4M
Raised by the campaign
$2.6M
$4M
Spent by the campaign
$2.5M
$17.1K
Cash on hand
$65.9K
Campaign money: FEC, through Dec 31, 2004.
Source: FEC campaign filingsUpdated Dec 31, 2004