2018 United States Senate election in Pennsylvania

The 2018 United States Senate election in Pennsylvania took place on November 6, 2018, to elect a member of the United States Senate to represent the State of Pennsylvania, concurrently with other elections to the United States Senate, elections to the United States House of Representatives, and various state and local elections. This was one of ten Democratic-held Senate seats up for election in a state that Donald Trump won in the 2016 presidential election. The primary elections were held on May 15. Incumbent Democratic Senator Bob Casey Jr. ran for re-election to a third term. Casey, who faced no primary opposition, defeated the Republican nominee, Lou Barletta, Green Party nominee Neal Gale, and Libertarian Party nominee Dale Kerns. Casey was the first senator to be elected to a third term from Pennsylvania since Arlen Specter in 1992, and the first Pennsylvania Democrat to be popularly elected to three terms in the Senate.

On ballot

 * Bob Casey Jr., incumbent U.S. Senator

On ballot

 * Lou Barletta, U.S. Representative from Hazleton
 * Jim Christiana, state representative from Beaver

Withdrew

 * Paul Addis, businessman (running for PA-5)
 * Cynthia E. Ayers, cyber security consultant and former National Security Agency employee
 * Jeff Bartos, real estate developer (running for lieutenant governor)
 * Paul DeLong, candidate for the U.S. Senate in 2004
 * Bobby Lawrence, small business owner (endorsed Dale Kerns)
 * Rick Saccone, state representative (ran for PA-18, ran for PA-14)
 * Andrew Shecktor, Berwick Borough Councilman (running for PA-9)

Declined

 * Mike Kelly, U.S. Representative
 * Pat Meehan, former U.S. Representative
 * Dave Reed, Majority Leader of the Pennsylvania House of Representatives

Results
[[File:Pennsylvania U.S. Senate Republican primary, 2018.svg|thumb|Results by county: {{legend|#800000|Barletta—>90%}} {{legend|#aa0000|Barletta—80–90%}} {{legend|#d40000|Barletta—70–80%}} {{legend|#cc2f4a|Barletta—60–70%}} {{legend|#e27f90|Barletta—50–60%}}

{{legend|#ff9955|Christiana—50–60%}} {{legend|#ff7f2a|Christiana—60–70%}} {{legend|#ff6600|Christiana—70–80%}} ]]

Libertarian Party
Dale Kerns ran unopposed for the Libertarian nomination and received the official nomination from the Pennsylvania Libertarian Party at the state convention on March 6, 2018.

Nominee

 * Dale Kerns, former Republican Eddystone Borough council member and board of directors member for Goodwill Industries

Nominee

 * Neal Gale, clean energy consultant

Candidates

 * Lou Barletta (R), U.S. Representative
 * Bob Casey Jr. (D), incumbent senator
 * Neal Gale (G), clean energy consultant
 * Dale Kerns (L), former Eddystone Borough council member

Predictions

 * Notes

Polling

 * with Jim Christiana
 * with generic Democrat and Republican

Counties that flipped from Democratic to Republican

 * Fayette (largest borough: Uniontown)
 * Luzerne (largest city: Wilkes-Barre)

By congressional district
Bob Casey Jr won 11 of 18 congressional districts, including the 1st and 10th districts, which elected Republicans to the House.