2018Final results
2018 election for U.S. Senate in Pennsylvania
U.S. Senate · Pennsylvania
Robert P. Casey, Jr. (D) won with 55.7% of the vote, defeating Lou Barletta (R) by 13.1 points.
Robert P. Casey, Jr.Democrat · winner
55.7%2,792,615
Lou BarlettaRepublican
42.6%2,135,149
Dale R. Kerns Jr.Libertarian
1.0%50,915
Neal Taylor GaleGreen
0.6%31,211
5,009,890 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.
Robert P. Casey, Jr.Lou Barletta
$17.8M
Raised by the campaign
$7.4M
$18.9M
Spent by the campaign
$7.8M
$488K
Cash on hand
$44.4K
Other candidates' campaigns: Dale R. Kerns Jr. $214.7K · Neal Taylor Gale $882.
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018
The candidates
Robert P. Casey, Jr. (D)Lou Barletta (R)
Also on the ballot: Dale R. Kerns Jr. (Libertarian), 1.0%; Neal Taylor Gale (Green), 0.6%