2014Final results
2014 runoff for U.S. Senate in Louisiana
U.S. Senate · Louisiana
Bill Cassidy (R) won with 55.9% of the vote, defeating Mary L. Landrieu (D) by 11.9 points.
Bill CassidyRepublican · winner
55.9%712,379
Mary L. LandrieuDemocrat
44.1%561,210
1,273,589 votes
Source: Federal Election CommissionUpdated Oct 3, 2026, 3:20 AM ET
The seat over time
D − R margin in this seat's races around 2014
Races before and after
Source: Federal Election CommissionUpdated Oct 3, 2026, 3:20 AM ET