2018Final results
2018 election for Louisiana's 4th District
U.S. House · Louisiana
Mike Johnson (R) won with 64.2% of the vote, defeating Ryan Trundle (D) by 30.6 points.
Mike JohnsonRepublican · winner
64.2%139,326
Ryan TrundleDemocrat
33.6%72,934
Mark David HalversonIndependent
2.1%4,612
216,872 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Ryan TrundleMike Johnson
$23.1K
Raised by the campaign
$1.2M
$24.2K
Spent by the campaign
$909K
-$184
Cash on hand
$409.3K
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018