2018 United States House of Representatives election in Delaware

The 2018 United States House of Representatives election in Delaware was held on November 6, 2018, to elect the U.S. representative from Delaware's at-large congressional district, who will represent the state of Delaware in the 116th United States Congress. The election coincided with the election of a U.S. Senator from Delaware and other federal and state offices. Democratic Congresswoman Lisa Blunt Rochester, the incumbent, won re-election.

Democratic primary
Lisa Blunt Rochester ran unopposed in the primary and automatically became the Democratic nominee.

Nominee

 * Lisa Blunt Rochester, incumbent U.S. Representative

Withdrew

 * Rose Izzo, Republican candidate for the seat in 2016, 2014, and 2012 (ran for State House in District 7)

Declined

 * Kerri Evelyn Harris, Dover activist and U.S. Air Force veteran (ran for U.S. Senate)

Nominee

 * Scott Walker, Republican candidate for the seat in 2016

Eliminated in primary

 * Lee Murphy, retired railroad worker and actor (refused to concede)

Write-in

 * Marvin Davis, far-rightist
 * Lee Murphy, retired railroad worker and actor (not filed)
 * Andrew Webb, community activist and student

Controversy
Shortly after the final results for the Republican primary, controversy almost immediately emerged about Scott Walker’s victory, as Lee Murphy had been seen by many as the favorite to win. Murphy refused to concede and took to Facebook, saying, “Friends, thanks for all your support- something stinks here and I will not be conceding anytime soon. Need to investigate big time. A Dem wins a Republican primary?” Murphy also called for an investigation into the results. Walker responded by saying that God had led his campaign to victory. Student and community activist Andrew Webb declared his Republican write-in candidacy on September 17, 2018, hoping to gain support from dissatisfied Republicans. He announced a platform of more moderate/traditional conservative ideas.

Endorsed by Sussex County Chapter

 * Andrew Webb, community activist and student (write-in)

Write-in

 * Andrew Webb, community activist and student

Declared

 * Paul Johnston, veteran (write-in)

Withdrew

 * Christopher Mockerman, activist (running for State House in District 17)

Debates

 * Full video of debate, University of Delaware October 17, 2018
 * Full audio of debate, Delaware Public Media October 17, 2018

Polling

 * with Lisa Blunt Rochester and Lee Murphy

Counties that flipped from Republican to Democratic

 * Kent (largest city: Dover)