2014Flipped from DemocraticFinal results

2014 election for U.S. Senate in Louisiana

Name: 2014 election for U.S. Senate in Louisiana
Start: 2014-11-04
Location: Louisiana

U.S. Senate · Louisiana

Bill Cassidy (R) won with 48.6% of the vote, defeating Mary L. Landrieu (D) by 4.3 points, a seat Democrats won last time.

Bill CassidyRepublican · winner

48.6%1,712,379

44.3%1,561,210

5.7%202,556

0.4%14,173

0.4%13,034

0.3%11,323

0.1%4,673

0.1%3,835

3,523,183 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 2014

Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET

Each line compares the two campaigns on one scale.

Mary L. LandrieuBill Cassidy

$16.2M

Raised by the campaign

$15.6M

$18.6M

Spent by the campaign

$14.7M

$62.6K

Cash on hand

$892.5K

Other candidates' campaigns: Rob Maness $3.4M · Wayne Ables $12.6K · Brannon Lee McMorris $5.4K.

Campaign money: FEC, through Dec 31, 2014.

Source: FEC campaign filingsUpdated Dec 31, 2014

Also on the ballot: Thomas Clements (Republican), 0.4%; Brannon Lee McMorris (Libertarian), 0.4%; Wayne Ables (Democrat), 0.3%; William P. Waymire Jr. (Democrat), 0.1%; Vallian Senegal (Democrat), 0.1%